Abū l-Ḥasan (Ḥusayn) Ṣā’id ibn Hibat Allāh ibn al-Mu’ammal
Date of Birth: Unknown
Place of Birth: Al-Ḥasīra
Date of Death: 1194/5
Place of Death: Unknown
Abū l-Ḥasan belonged to the East Syrian (‘Nestorian’) community of Baghdad, where he was a renowned physician; his activities were recorded by Ibn Uṣaybi‘a and al-Qiftī. He also wrote two theological works, a refutation of the Jews and a work on God’s unity and Trinity (see below).