Mūsā ibn Shākir

{{Short description|Iranian mathematician and astronomer}}

Mūsā ibn Shākir ({{langx|ar|موسى بن شاكر}}) was the father of the three Banū Mūsā ("Sons of Musa") brothers, the renowned 9th-century scholars of Baghdad. Earlier in life, he had been a highwayman and astronomer in Khorasan and was a Persian.{{Cite book| publisher = Routledge| isbn = 0415061334| last = Gutas| first = Dimitri| title = Greek Thought, Arabic Culture: The Graeco-Arabic Translation Movement in Baghdad and Early 'Abbasaid Society| date = 1998-07-23| page=133}} After befriending al-Maʾmūn, who was then a governor of Khorasan and staying in Marw, Musa was employed as an astrologer and astronomer. When he died, he left his three sons in the custody of Al-Ma'mun.{{cite encyclopedia | last = Pingree | first = D. | authorlink = | encyclopedia = Encyclopædia Iranica | title = Banū Mūsā | url =http://www.iranicaonline.org/articles/banu-musa-the-name-applied-to-three-brothers-abbasid-astronomers-whose-father-was-musa-b | date = 1988 }}