Nathan P. Gibson, Vanessa Birkhahn and Hanna Friedel, (eds.), "Ibn Isḥāq — ابن إسحاق " in Communities of Knowledge: Interreligious Networks of Scholars in Ibn Abi Usaybiʿa’s History of the Physicians last modified June 23, 2021, https://usaybia.net/person/1006 Ibn Isḥāq ابن إسحاق Ibn Isḥāq, vizier of the Umayyad emirs in Cordova https://usaybia.net/person/1006 vizier A literary history of medicine: the 'Uyūn al-anbā' fī ṭabaqāt al-aṭibbā' of Ibn Abī Uṣaybi'ah 13.20