Nathan P. Gibson, Vanessa Birkhahn and Hanna Friedel, (eds.), "al-Muhtadī bi-Allāh, Abū ʿAbd Allāh Muḥammad ibn al-Wāthiq — المهتدي بالله أبو عبد الله محمد بن الواثق " 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/1646
   
      
         
            
               al-Muhtadī bi-Allāh, Abū ʿAbd Allāh Muḥammad ibn al-Wāthiq
               المهتدي بالله أبو عبد الله محمد بن الواثق
               al-Muhtadī bi-Allāh, Abū ʿAbd Allāh Muḥammad ibn al-Wāthiq, son and successor to al-Wāthiq (`reg.` 255–256/869–70)
               https://usaybia.net/person/1646
               
                  caliph
               
               
                  Muslim
               
               
                  A literary history of medicine: the 'Uyūn al-anbā' fī ṭabaqāt al-aṭibbā' of Ibn Abī Uṣaybi'ah
                  
                  8.4.4
                  8.16
                  8.23.3n