Athīr al-Dīn al-Mufaḍḍal ibn ʿUmar ibn al-Mufaḍḍal al-Samarqandī al-Abharī (Persian): اثیرالدین مُفَضَّل بن عمر بن مَفَضَّل سمرقندی ابهری; d. 1262 or 1265[2][3] also known as Athīr al-Dīn al-Munajjim (اثیرالدین منجم) was an Iranian Muslim polymath, philosopher, astronomer, astrologer and mathematician.
[1] In his youth al-Abharī was a student of the theologian Fakhr al-Dīn al-Rāzī, probably in the city of Ghazni or Herat.
Beside philosophy and logic, from al-Rāzī it is likely that al-Abharī received an orthodox Sunni instruction in theology (kalām), jurisprudence (fiqh), and Qur’anic exegesis (tafsīr).
[3] When Mongol took Khwarezmian Empire, al-Abharī, in 1228 he flew to Erbil, then to Damascus, where he studied to Muḥyī al-Dīn Muḥammad b. Sa‘īd b.
[3] Then he went to Mosul, where he studied mathematics, especially astronomy, under the direction of Kamāl al-Dīn al-Mawṣilī.