Shīʿa Islam or Shīʿīsm is the second-largest
branch
A branch, sometimes called a ramus in botany, is a woody structural member connected to the central trunk of a tree (or sometimes a shrub). Large branches are known as boughs and small branches are known as twigs. The term '' twig'' usually ...
of
Islam
Islam (; ar, ۘالِإسلَام, , ) is an Abrahamic monotheistic religion centred primarily around the Quran, a religious text considered by Muslims to be the direct word of God (or ''Allah'') as it was revealed to Muhammad, the ...
. It holds that the
Islamic prophet
Prophets in Islam ( ar, الأنبياء في الإسلام, translit=al-ʾAnbiyāʾ fī al-ʾIslām) are individuals in Islam who are believed to spread God in Islam, God's message on Earth and to serve as models of ideal human behaviour. So ...
Muhammad
Muhammad ( ar, مُحَمَّد; 570 – 8 June 632 CE) was an Arab religious, social, and political leader and the founder of Islam. According to Islamic doctrine, he was a prophet divinely inspired to preach and confirm the monot ...
designated
ʿAlī ibn Abī Ṭālib as his
successor (''khalīfa'') and the
Imam
Imam (; ar, إمام '; plural: ') is an Islamic leadership position. For Sunni Muslims, Imam is most commonly used as the title of a worship leader of a mosque. In this context, imams may lead Islamic worship services, lead prayers, se ...
(spiritual and political leader) after him,
most notably at the
event of Ghadir Khumm,
but was prevented from succeeding Muhammad as the leader of the
Muslims
Muslims ( ar, المسلمون, , ) are people who adhere to Islam, a monotheistic religion belonging to the Abrahamic tradition. They consider the Quran, the foundational religious text of Islam, to be the verbatim word of the God of Abra ...
as a result of the choice made by some of
Muhammad's other companions (''ṣaḥāba'') at
Saqifah. This view primarily contrasts with that of
Sunnī Islam, whose adherents believe that Muhammad did not appoint a successor before
his death and consider
Abū Bakr
Abu Bakr Abdallah ibn Uthman Abi Quhafa (; – 23 August 634) was the senior companion and was, through his daughter Aisha, a father-in-law of the Islamic prophet Muhammad, as well as the first caliph of Islam. He is known with the honor ...
, who was appointed
caliph
A caliphate or khilāfah ( ar, خِلَافَة, ) is an institution or public office under the leadership of an Islamic steward with the title of caliph (; ar, خَلِيفَة , ), a person considered a political-religious successor to th ...
by a group of senior Muslims at Saqifah, to be the first
rightful (''rāshidūn'') caliph after Muhammad. Adherents of Shīʿa Islam are called Shīʿa Muslims, Shīʿītes, or simply Shīʿa or Shia.
Shīʿa Islam is based on a
''ḥadīth'' report concerning Muhammad's pronouncement at Ghadir Khumm.
[Esposito, John. "What Everyone Needs to Know about Islam". Oxford University Press, 2002 , . p. 40] Shīʿa Muslims believe that
ʿAlī ibn Abī Ṭālib, Muhammad's cousin and son-in-law, should have been the designated successor to Muhammad as Islam's spiritual and political leader.
This belief later developed into the concept of
Imamah, the idea that certain descendants of Muhammad, the ''
Ahl al-Bayt'', are rightful rulers or Imams, whom Shīʿa Muslims believe possess special spiritual and political authority over the
Muslim community.
Although there are many
Shīʿa subsects, modern Shīʿa Islam has been divided into two main groupings:
Twelvers and
Ismāʿīlīs, with Twelver Shīʿas being the largest and most influential group among Shīʿa Muslims.
Shīʿa Islam is the
second largest branch of Islam, followed by 10–15% of all Muslims.
Twelver Shīʿīsm is the largest branch of Shīʿa Islam,
comprising about 85% of all Shīʿa Muslims.
Terminology
Collectively, adherents of Shīʿa Islam are called the ''Shīʿah'' ( ar, شِيعَة; ), which is short for ''Shīʿatu ʿAlī'' ( ar, شِيعَة عَلِيّ; ) meaning "followers of Ali", "faction of Ali", or "partisans of Ali";
[The New Encyclopædia Britannica, Jacob E. Safra, Chairman of the Board, 15th Edition, Encyclopædia Britannica, Inc., 1998, , Vol 10, p. 738] ''Shīʿī'' () denotes both the singular noun and the adjective form, while ''Shīyāʿ'' () refers to the plural noun.
''Shīʿa'' or ''Shia'' and ''Shīʿīsm''/''Shīʿīte'' or ''Shiism''/''Shiite'' are the forms used in
English and other
European languages
Most languages of Europe belong to the Indo-European language family. Out of a total European population of 744 million as of 2018, some 94% are native speakers of an Indo-European language. Within Indo-European, the three largest phyla are Ro ...
for adherents, mosques, traditions, and things associated with the Shīʿa branch of Islam.
The term was first used during Muhammad's lifetime. At present, the word refers to the Muslims who believe that the leadership of the
Muslim community after Muhammad belongs to
ʿAlī ibn Abī Ṭālib, Muhammad's cousin and son-in-law, and his successors.
Nawbakhti states that the term ''Shīʿa'' refers to a group of Muslims who at the time of Muhammad and after him regarded ʿAlī as the
Imam
Imam (; ar, إمام '; plural: ') is an Islamic leadership position. For Sunni Muslims, Imam is most commonly used as the title of a worship leader of a mosque. In this context, imams may lead Islamic worship services, lead prayers, se ...
and
caliph
A caliphate or khilāfah ( ar, خِلَافَة, ) is an institution or public office under the leadership of an Islamic steward with the title of caliph (; ar, خَلِيفَة , ), a person considered a political-religious successor to th ...
.
Al-Shahrastani expresses that the term ''Shīʿa'' refers to those who believe that ʿAlī is designated as the
heir, Imam, and caliph by Muhammad
and that ʿAlī's authority is maintained through his descendants.
For the adherents of Shīʿa Islam, this conviction is implicit in the
Quran
The Quran (, ; Standard Arabic: , Quranic Arabic: , , 'the recitation'), also romanized Qur'an or Koran, is the central religious text of Islam, believed by Muslims to be a revelation from God. It is organized in 114 chapters (pl.: , sing.: ...
and the
history of Islam
The history of Islam concerns the political, social, economic, military, and cultural developments of the Islamic civilization. Most historians believe that Islam originated in Mecca and Medina at the start of the 7th century CE. Muslims ...
. Shīʿa Muslim scholars emphasize that the notion of authority is linked to the family of the
Abrahamic prophets as the Quranic verses and show: ''"Indeed, God chose Adam and Noah and the family of Abraham and the family of 'Imran over the worlds – (33) Descendants, some of them from others. And God is Hearing and Knowing. (34)"''
Beliefs and practices
Theology
Shīʿa Islam is the
second largest branch of Islam, followed by 10–15% of all Muslims,
considered to be vast and
inclusive of many different denominations and subgroups.
Shīʿa Islam embodies a completely independent system of religious interpretation and political authority in the
Muslim world
The terms Muslim world and Islamic world commonly refer to the Islamic community, which is also known as the Ummah. This consists of all those who adhere to the religious beliefs and laws of Islam or to societies in which Islam is practiced. In ...
. The original Shīʿa identity referred to the followers of Imam ʿAlī, and Shīʿa theology was formulated after the ''
hijra'' (8th century CE). The first Shīʿa governments and societies were established by the end of the 9th century CE. The 10th century CE has been referred to by the scholar of Islamic studies
Louis Massignon as "the Shiite Ismaili century in the history of Islam".
Profession of faith (''Shahada'')

The Shīʿa version of the ''
Shahada'', the Islamic profession of faith, differs from that of the
Sunnīs.
The Sunnī version of the ''Shahada'' states "There is no god except God, Muhammad is the messenger of God", but to this declaration of faith Shīʿa Muslims append the phrase ''Ali-un-Waliullah'' (: "ʿAlī is the ''
Wali'' (custodian) of
God
In monotheistic thought, God is usually viewed as the supreme being, creator, and principal object of faith. Swinburne, R.G. "God" in Honderich, Ted. (ed)''The Oxford Companion to Philosophy'', Oxford University Press, 1995. God is typically ...
"). The basis for the Shīʿa belief in ʿAlī ibn Abī Ṭālib as the ''Wali'' of God is derived from the Quranic verse , the "
Verse of Wilayah".
This additional phrase to the declaration of faith embodies the Shīʿa emphasis on the inheritance of authority through
Muhammad's family and lineage. The three clauses of the Shīʿa version of the ''Shahada'' thus address the fundamental Islamic beliefs of ''
Tawḥīd
Tawhid ( ar, , ', meaning "unification of God in Islam (Allāh)"; also romanization of Arabic, romanized as ''Tawheed'', ''Tawhid'', ''Tauheed'' or ''Tevhid'') is the indivisible oneness concept of monotheism in Islam. Tawhid is the religion ...
'' (unity and oneness of God), ''
Nubuwwah'' (the
prophethood of Muhammad), and ''
Imamah'' (the Imamate, leadership of the faith).
Infallibility (''Ismah'')

''Ismah'' is the concept of
infallibility
Infallibility refers to an inability to be wrong. It can be applied within a specific domain, or it can be used as a more general adjective. The term has significance in both epistemology and theology, and its meaning and significance in both fi ...
or "divinely bestowed freedom from error and sin" in Islam.
Muslims believe that Muhammad, along with
other prophets and messengers in Islam, possessed ''ismah''.
Twelver and
Ismāʿīlī Shīʿa Muslims also attribute the quality to
Imams as well as to
Fāṭimah, daughter of Muhammad, in contrast to the
Zaydī Shīʿas, who don't attribute ''ismah'' to the Imams. Though initially beginning as a political movement, infallibility and sinlessness of the Imams later evolved as a distinct belief of (non-Zaydī) Shīʿīsm.
According to
Shīʿa Muslim theologians, infallibility is considered a rational, necessary precondition for spiritual and religious guidance. They argue that since
God
In monotheistic thought, God is usually viewed as the supreme being, creator, and principal object of faith. Swinburne, R.G. "God" in Honderich, Ted. (ed)''The Oxford Companion to Philosophy'', Oxford University Press, 1995. God is typically ...
has commanded absolute obedience from these figures, they must only order that which is right. The state of infallibility is based on the Shīʿa interpretation of the
Verse of Purification. Thus, they are the most pure ones, the only immaculate ones preserved from, and immune to, all uncleanness. It doesn't mean that supernatural powers prevent them from committing a
sin, but due to the fact that they have absolute belief in God, they refrain from doing anything that is a sin.
They also have a complete knowledge of God's will. They are in possession of all knowledge brought by the
angels to the prophets (''nabī'') and the messengers (''rāsūl''). Their knowledge encompasses the totality of all times. Thus, they are believed to act without fault in religious matters. Shīʿa Muslims regard
ʿAlī ibn Abī Ṭālib as the
successor of Muhammad not only ruling over the entire
Muslim community in justice, but also interpreting the Islamic faith, practices, and its esoteric meaning. Hence he was regarded as being free from error and sin (infallible), and appointed by God by divine decree (''
nass'') to be the first Imam. ʿAlī is regarded as a "perfect man" (''al-insan al-kamil'') similar to Muhammad, according to the Shīʿa viewpoint.
Occultation (''Ghaybah'')
The
Occultation is an
eschatological belief held in various denominations of Shīʿa Islam concerning a
messianic figure, the hidden and last Imam known as "the
Mahdi
The Mahdi ( ar, ٱلْمَهْدِيّ, al-Mahdī, lit=the Guided) is a messianic figure in Islamic eschatology who is believed to appear at the end of times to rid the world of evil and injustice. He is said to be a descendant of Muhammad w ...
", that one day shall return on Earth and fill the world with justice. According to the doctrine of
Twelver Shīʿīsm, the main goal of Imam Mahdi will be to establish an
Islamic state
An Islamic state is a state that has a form of government based on Islamic law (sharia). As a term, it has been used to describe various historical polities and theories of governance in the Islamic world. As a translation of the Arabic term ...
and to apply
Islamic laws that were revealed to Muhammad. The Quran doesn't contain verses on the Imamate, which is the basic doctrine of Shīʿa Islam. Some Shīʿa subsects, such as the
Zaydī Shīʿas and
Nizārī Ismāʿīlīs, don't believe in the idea of the Occultation. The groups which do believe in it differ as to which lineage of the Imamate is valid, and therefore which individual has gone into Occultation. They believe there are many signs that will indicate the time of his return.
Twelver Shīʿa Muslims believe that the prophesied Mahdi and
twelfth Imam,
Hujjat Allah al-Mahdi
Muḥammad ibn al-Ḥasan al-Mahdī ( ar, محمد بن الحسن المهدي) is believed by the Twelver Shia to be the last of the Twelve Imams and the eschatological Mahdi, who will emerge in the end of time to establish peace and justic ...
, is already on Earth in Occultation, and
will return at the end of time.
Ṭayyibi Ismāʿīlīs and Fatimid/Bohra/
Dawoodi Bohra believe the same but for their 21st Ṭayyib,
At-Tayyib Abi l-Qasim, and also believe that a ''
Da'i al-Mutlaq'' ("Unrestricted Missionary") maintains contact with him.
Sunnī Muslims believe that the future Mahdi has not yet arrived on Earth.
''Ḥadīth'' tradition
Shīʿa Muslims believe that the status of ʿAlī is supported by numerous ''
ḥadīth
Ḥadīth ( or ; ar, حديث, , , , , , , literally "talk" or "discourse") or Athar ( ar, أثر, , literally "remnant"/"effect") refers to what the majority of Muslims believe to be a record of the words, actions, and the silent approval ...
'', including the
Hadith of the pond of Khumm,
Hadith of the two weighty things,
Hadith of the pen and paper,
Hadith of the invitation of the close families, and
Hadith of the Twelve Successors. In particular, the
Hadith of the Cloak is often quoted to illustrate Muhammad's feeling towards ʿAlī and his family by both Sunnī and Shīʿa scholars. Shīʿa Muslims prefer to study and read the ''ḥadīth'' attributed to the ''
Ahl al-Bayt'' and close associates, and most
have their own separate ''ḥadīth'' canon.
Holy Relics (''Tabarruk'')
It is believed that the armaments and sacred items of all of the prophets, including
Muhammad
Muhammad ( ar, مُحَمَّد; 570 – 8 June 632 CE) was an Arab religious, social, and political leader and the founder of Islam. According to Islamic doctrine, he was a prophet divinely inspired to preach and confirm the monot ...
, were handed down in succession to the Imams of the ''
Ahl al-Bayt''.
Jaʿfar al-Ṣādiq, the
6th Shīʿīte Imam, in ''
Kitab al-Kafi'' mentions that "with me are the arms of the Messenger of Allah. It is not disputable."
Further, he claims that with him is the sword of the Messenger of God, his coat of arms, his Lamam (pennon) and his helmet. In addition, he mentions that with him is the flag of the Messenger of God, the victorious. With him is the Staff of
Moses, the ring of
Solomon, son of
David
David (; , "beloved one") (traditional spelling), , ''Dāwūd''; grc-koi, Δαυΐδ, Dauíd; la, Davidus, David; gez , ዳዊት, ''Dawit''; xcl, Դաւիթ, ''Dawitʿ''; cu, Давíдъ, ''Davidŭ''; possibly meaning "beloved one". w ...
, and the tray on which Moses used to offer his offerings. With him is the name that whenever the Messenger of God would place it between the Muslims and pagans no arrow from the pagans would reach the Muslims. With him is the similar object that angels brought.
Al-Ṣādiq also narrated that the passing down of armaments is synonymous to receiving the ''Imamat'' (leadership), similar to how the
Ark of Covenant in the house of the
Israelites
The Israelites (; , , ) were a group of Semitic-speaking tribes in the ancient Near East who, during the Iron Age, inhabited a part of Canaan.
The earliest recorded evidence of a people by the name of Israel appears in the Merneptah Stele o ...
signaled prophethood.
Imam
Ali al-Ridha narrates that wherever the armaments among us would go, knowledge would also follow and the armaments would never depart from those with knowledge (''Imamat'').
Other doctrines
Doctrine about necessity of acquiring knowledge
According to
Muhammad Rida al-Muzaffar, God gives humans the faculty of reason and argument. Also, God orders humans to spend time thinking carefully on creation while he refers to all creations as his signs of power and glory. These signs encompass all of the universe. Furthermore, there is a similarity between humans as the little world and the universe as the large world. God does not accept the faith of those who follow him without thinking and only with imitation, but also God blames them for such actions. In other words, humans have to think about the universe with reason and intellect, a faculty bestowed on us by God. Since there is more insistence on the faculty of intellect among Shīʿa Muslims, even evaluating the claims of someone who claims prophecy is on the basis of intellect.
Doctrine concerning prayer
Praying in Shīʿa Islam has an important place, as Muhammad described it as a weapon of the
believer
Believer(s) or The Believer(s) may refer to:
Religion
* Believer, a person who holds a particular belief
** Believer, a person who holds a particular religious belief
*** Believers, Christians with a religious faith in the divine Christ
*** Bel ...
. In fact, Duʼa considered as something that is a feature of Shia community in a sense. Performing Duʼa in Shīʿa Islam has a special ritual. Because of this, there are many books written on the instructions and conditions of praying among Shīʿa Muslims.
Shīʿīte clergymen always invited their followers to recite Duʼa. For instance, ʿAlī has been considered with the subject of Duʼa because of his leadership in monotheism.
Practices

Shīʿa religious practices, such as prayers, differ only slightly from the Sunnīs. While all
Muslims pray five times daily, Shīʿa Muslims have the option of combining ''
Dhuhr'' with ''
Asr'' and ''
Maghrib'' with ''
Isha''', as there are three distinct times mentioned in the
Quran
The Quran (, ; Standard Arabic: , Quranic Arabic: , , 'the recitation'), also romanized Qur'an or Koran, is the central religious text of Islam, believed by Muslims to be a revelation from God. It is organized in 114 chapters (pl.: , sing.: ...
. The Sunnīs tend to combine only under certain circumstances.
Holidays
Shīʿa Muslims celebrate the following annual holidays:
*
Eid ul-Fitr, which marks the end of fasting during the month of
Ramadan
*
Eid al-Adha
Eid al-Adha () is the second and the larger of the two main holidays celebrated in Islam (the other being Eid al-Fitr). It honours the willingness of Ibrahim (Abraham) to sacrifice his son Ismail (Ishmael) as an act of obedience to Allah's co ...
, which marks the end of the ''
Hajj'' or pilgrimage to Mecca
*
Eid al-Ghadeer, which is the anniversary of the Ghadir Khum, the occasion when Muhammad announced Ali's Imamate before a multitude of Muslims. Eid al-Ghadeer is held on the 18th of Dhu al-Hijjah.
* The
Mourning of Muharram and the
Day of Ashura for Shīʿa Muslims commemorate the martyrdom of
Ḥusayn ibn ʿAlī, brother of
Ḥasan and grandson of Muhammad, who was killed by Yazid ibn Muawiyah in
Karbala
Karbala or Kerbala ( ar, كَرْبَلَاء, Karbalāʾ , , also ;) is a city in central Iraq, located about southwest of Baghdad, and a few miles east of Lake Milh, also known as Razzaza Lake. Karbala is the capital of Karbala Govern ...
(central Iraq). Ashura is a day of deep mourning which occurs on the 10th of
Muharram.
*
Arba'een commemorates the suffering of the women and children of Ḥusayn ibn ʿAlī's household. After Ḥusayn was killed, they were marched over the desert, from Karbala (central Iraq) to Shaam (
Damascus, Syria). Many children (some of whom were direct descendants of Muhammad) died of thirst and exposure along the route. Arbaein occurs on the 20th of
Safar, 40 days after Ashura.
*
Mawlid, Muhammad's birth date. Unlike Sunnī Muslims, who celebrate the 12th of
Rabi' al-awwal as Muhammad's day of birth or death (because they assert that his birth and death both occur in this week), Shīʿa Muslims celebrate Muhammad's birthday on the 17th of the month, which coincides with the birth date of
Jaʿfar al-Ṣādiq, the
6th Shīʿīte Imam.
*
Fāṭimah's birthday on 20th of
Jumada al-Thani. This day is also considered as the "'women and mothers' day"
*
ʿAlī's birthday on 13th of
Rajab.
*
Mid-Sha'ban is the birth date of the 12th and final Twelver imam,
Muhammad al-Mahdi. It is celebrated by Shia Muslims on the 15th of
Sha'aban.
*
Laylat al-Qadr, anniversary of the night of the revelation of the Quran.
*
Eid al-Mubahila celebrates a meeting between the ''
Ahl al-Bayt'' (household of Muhammad) and a Christian deputation from Najran. Al-Mubahila is held on the 24th of Dhu al-Hijjah.
Holy sites
After the
four holy cities of Islam (
Mecca
Mecca (; officially Makkah al-Mukarramah, commonly shortened to Makkah ()) is a city and administrative center of the Mecca Province of Saudi Arabia, and the holiest city in Islam. It is inland from Jeddah on the Red Sea, in a narrow val ...
,
Medina
Medina,, ', "the radiant city"; or , ', (), "the city" officially Al Madinah Al Munawwarah (, , Turkish: Medine-i Münevvere) and also commonly simplified as Madīnah or Madinah (, ), is the second-holiest city in Islam, and the capital of the ...
,
Jerusalem
Jerusalem (; he, יְרוּשָׁלַיִם ; ar, القُدس ) (combining the Biblical and common usage Arabic names); grc, Ἱερουσαλήμ/Ἰεροσόλυμα, Hierousalḗm/Hierosóluma; hy, Երուսաղեմ, Erusałēm. i ...
, and
Damascus), the cities of
Najaf,
Karbala
Karbala or Kerbala ( ar, كَرْبَلَاء, Karbalāʾ , , also ;) is a city in central Iraq, located about southwest of Baghdad, and a few miles east of Lake Milh, also known as Razzaza Lake. Karbala is the capital of Karbala Govern ...
, and
Qom
Qom (also spelled as "Ghom", "Ghum", or "Qum") ( fa, قم ) is the seventh largest metropolis and also the seventh largest city in Iran. Qom is the capital of Qom Province. It is located to the south of Tehran. At the 2016 census, its popul ...
are the most revered by Shīʿa Muslims.
The
Sanctuary of Imām ʿAlī in Najaf, the
Shrine of Imam Ḥusayn in Karbala, and the
Shrine of Fāṭimah al-Maʿṣūmah in Qom are very essential for Shīʿa Muslims. Other venerated pilgrimage sites include the
Imam Reza shrine in
Mashhad, the
Kadhimiya Mosque in
Kadhimiya,
Al-Askari Mosque in
Samarra
Samarra ( ar, سَامَرَّاء, ') is a city in Iraq. It stands on the east bank of the Tigris in the Saladin Governorate, north of Baghdad. The city of Samarra was founded by Abbasid Caliph Al-Mutasim for his Turkish professional ar ...
, the
Sahla Mosque, the
Great Mosque of Kufa, the
Jamkaran Mosque in Qom, and the
Tomb of Daniel in
Susa.
Most of the
Shīʿa sacred places and heritage sites in Saudi Arabia have been destroyed by the
Al Saud-
Wahhabi armies of the
Ikhwan
The Ikhwan ( ar, الإخوان, al-ʾIkhwān, The Brethren), commonly known as Ikhwan min ta'a Allah ( ar, إخوان من أطاع الله), was a traditionalist religious militia made up of traditionally nomadic tribesmen which formed a signif ...
, the most notable being the tombs of the Imams located in the Al-Baqi' cemetery in 1925. In 2006, a bomb destroyed the shrine of Al-Askari Mosque. (''See'':
Anti-Shi'ism).
Demographics

It is estimated that either 10–20%
or 10–13%