Nathan P. Gibson, Vanessa Birkhahn and Hanna Friedel, (eds.), "ʿUbayd Allāh ibn al-Mahdī — عبيد الله بن المهدي " 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/2253
   
      
         
            
               ʿUbayd Allāh ibn al-Mahdī
               عبيد الله بن المهدي
               ʿUbayd Allāh ibn al-Mahdī, governor of Egypt under Hārūn al-Rashīd
               https://usaybia.net/person/2253
               
                  governor
               
               
                  A literary history of medicine: the 'Uyūn al-anbā' fī ṭabaqāt al-aṭibbā' of Ibn Abī Uṣaybi'ah
                  
                  14.1