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Ibn Kammūna at Aleppo

Sa‘d b. Mansūr Ibn Kammūna, a Jewish polymath whose writings are now receiving a good deal of scholarly attention, worked in Baghdad under the aegis of the Mongol rulers and their courtiers. Born early in the thirteenth century, so it seems, he was forced to flee the capital after rioters protested against his book which compared the three revealed monotheistic faiths; he died in the 1280s. His oeuvre includes a treatise on ophthalmology, no longer extant; quotations from it are however available in the writing of another ophthalmologist, Sadaqa ibn Ibrāhīm al-Shādhilī. From these we learn that Ibn Kammūna practiced medicine in Aleppo (Halab).