''Shāyast ne-Shāyast'' ( MP: "Proper and Improper") is an 8th/9th-century

Zoroastrian Zoroastrianism ( ), also called Mazdayasnā () or Beh-dīn (), is an Iranian religion centred on the Avesta and the teachings of Zarathushtra Spitama, who is more commonly referred to by the Greek translation, Zoroaster ( ). Among the wo ...

Middle Persian Middle Persian, also known by its endonym Pārsīk or Pārsīg ( Inscriptional Pahlavi script: , Manichaean script: , Avestan script: ) in its later form, is a Western Middle Iranian language which became the literary language of the Sasania ...

compilation of miscellaneous laws and customs regarding sin and impurity, with other memoranda about ceremonies and religious subjects in general. The text contains about 13,500 words. The content of this collection are of a very varied character, but sins and good works, precautions to avoid impurities, details of ceremonies and customs, the mystic signification of the

Gathas The Gathas () are 17 hymns in the Avestan language from the Zoroastrian oral tradition of the Avesta. The oldest surviving text fragment dates from 1323 CE, but they are believed by scholars to have been composed before 1000 BCE and passed dow ...

, and praise of the sacred beings are the principal subjects discussed.

References

{{DEFAULTSORT:Shayast ne-Shayast Zoroastrian texts Middle Persian literature 9th-century Persian books