al-Daylamī, Abū al-Ḥasan (d. ca. 392/1001–1002), ʿAlī b. Muḥammad, was a well-known Sufi author who lived in Shīrāz during the 4th/10th century. Little is known about his life. It is only by indirect evidence that we can affirm that he was related to the Daylamī families who, in the first half of the 4th/10th century during the reign of the Būyids, migrated from northern Iran southward and settled particularly in the region of Fārs. It is probable, therefore, that he was born in the first half of the 4th/10th century (Rūzbihān Baqlī, Abhar, Persian intr…