He lived and worked at the Academy of Gundishapur, in Khuzestan, Iran, at the time of Yahya ibn Khalid ibn Barmak, who died in 803 AD, where he is reported to have been making astronomical observations around the year 800AD. He and Mashallah ibn Athari were among the earliest Islamic era astronomers who flourished during the reign of al-Mansur, the second Abbasid Caliph.
He also compiled tables called the comprehensive (Mushtamil).
- The Golden Age of Persia. By Richard Nelson Frye. p163.
- H. Suter: Die Mathematiker und Astronomen der Araber (l0, 1900)