and of the vizier Bozorgmehr and call him Ebrahim; some name him Behzadan, son of Vendad Hormoz; and others relate him to the Abbasids or to the Alids. These suggestions are all doubtful". He was most likely of Persian origin, and was born in either Merv or near Isfahan. The exact date is unknown, either in 718/9 or sometime in 723/7.

Shi'a activist and missionary activity in Khurasan