Thābit ibn Qurra, was a pagan Sabian scholar known for his work in mathematics, medicine, astronomy, and translation. He lived in Baghdad in the second half of the ninth century during the time of the Abbasid Caliphate. 836 – 901; died at about 65. Alive at the same time as Alfred the Great, Farabi, Ahmad ibn Hanbal, Rudaki, and Muḥammad ibn Musa al-Khwarizmi. Wiki link