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, Abū ʿAlī Yaḥyā b. ʿĪsā , Arab physician of Bag̲h̲dād, known in the West under the names of Ben Gesla, Byngezla, Buhahylyha, etc. Of Christian origin, he embraced Islam under the influence of his teacher, the Muʿtazilī Abū ʿAlī ibn al-Walīd, on 11 Ḏj̲umādā II 466/11 February 1074. He was secretary to the Ḥanafī ḳāḍī of Bag̲h̲dād and studied medicine with Ṣāʿid b. Hibat Allāh, court physician to al-Muḳtadī. He lived in the al-Kark̲h̲ quarter, where he attended his neighbours and his friends without payment and even obtained the…

, dāʾūd b. ʿumar al-ḍarīr , Arab physician born at Antioch, son of the raʾīs of Ḳaryat Sīdī Ḥabīb al-Nad̲j̲d̲j̲ār, undertook, though blind, long journeys which led him also into Asia Minor. There he learnt Greek, on the advice of a Persian physician who had cured him of a malady from which he had long suffered, in order to be able to study the sources of medical science in the original texts. Later, he lived at Damascus and Cairo, and died in 1008/1599 at Mecca, after less than a year’s stay there. His chief work is a large, exhaustive medical hand-book in which he followed Ibn al-Bayṭār, named Tad̲h̲…