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Yahya ibn Abi Mansur

Yahya ibn Abi Mansur (Arabic: یحیی ابن ابی منصور‎), was a senior Persian[1] official from the Banu al-Munajjim family, who served as an astronomer/astrologer at the court of Abbasid caliph al-Ma'mun. His Persian name was Bizist, son of Firuzan (بزیست فیروزان). Since his father Abu Mansur Aban was an astrologer in service of caliph al-Mansur, it can be concluded that Yahya spent his childhood in Baghdad. His first known position was as an astrologer for al-Fadl ibn Sahl, vizier of the caliph al-Ma'mun. After the assassination of al-Fadl, Yahya converted to Islam and adopted his Arabic name. He was also associated with the House of Wisdom and is mentioned as a teacher of the Banu Musa. He died near Aleppo in 830 CE.


  1. ^ Dalen, Benno van (2014). "Yaḥyā ibn Abī Manṣūr: Abū ʿAlī Yaḥyā ibn Abī Manṣūr al‐Munajjim". In Thomas Hockey; et al. (eds.). The Biographical Encyclopedia of Astronomers. New York: Springer. p. 2391. ISBN 978-1-4419-9918-4.


  • D. Pingree. "Banu Monajjem". Encyclopaedia Iranica. Ed. Ehsan Yarshater. Columbia University. Retrieved 14 February 2014.
  • Karamati, Younes; Umar, Suheyl (2013). "Banū al-Munajjim". " Encyclopaedia Islamica. Leiden and New York: BRILL. ISBN 9789004246911.

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