''Fara'id al-Simtayn'' is a

hadith 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 approva ...

collection by the Sunni scholar Ibrahim b Muhammad b Himaway al Juwayni, who died in 1322 AD (722 AH). He was born in 644 AH or 1246 CE.

al-Dhahabi Shams ad-Dīn adh-Dhahabī (), also known as Shams ad-Dīn Abū ʿAbdillāh Muḥammad ibn Aḥmad ibn ʿUthmān ibn Qāymāẓ ibn ʿAbdillāh at-Turkumānī al-Fāriqī ad-Dimashqī (5 October 1274 – 3 February 1348) was an Islamic historia ...

has praised him in his book Tadhkirat al-huffaz and writes about the author: I heard (hadith) from the superior, the most perfect Imam and Muhadith, pride of Islam; Sadr al-deen Ibrahim bin Muhammad Al-Mouayed bin Hamweh Al-Khurasani Al-Juwayni, the Sheikh of Sufis, he came to us to obtain hadith and he narrated for us from two men who were Al-Muayed Al-Tusi's companions, he (Hamweni) was too careful in obtaining the traditions, he was a good reciter, good looking, magisterial, pious and through him Ghazan the king converted to Islam, he died in year 722 in the age of 78. May Allah have mercy on him.Tadhkirat al-Huffaz, Volume 4, page 1500

References

Sunni hadith collections {{Islam-book-stub