Ibn Jumay‘ was born to a Jewish family in Fustat, Egypt. He studied with the physician Ibn al-‘Aynzarbī (died 1153/AH 548) and entered the service of Saladin. According to Ibn Abi Usaibia's Lives of the Physicians, Ibn Jumay‘ wrote eight works on medical-related subjects.
A contemporary of Moses Maimonides, Ibn Jumay‘ "became famous for having prevented a person having a cataleptic fit from being buried alive. He was the author of a number of medical writings, including al-Irshād li-maṣāliḥ, dedicated to al-Baysanī, the vizier to Saladin, and completed by Ibn Jumay‘ al-Isrā’īlī's son Abū Tahir Ismā‘īl."
Kitāb al-irshād li-masālih an-nufūs waʻl-ajssad [Guide to the Welfare of Souls and Bodies]
(ed. and tr. by Hartmut Fähndrich) Treatise to Salāh ad-Dīn on the revival of the art of medicine, English and Arab text, Wiesbaden: Steiner, 1983.
^Other name forms: Abu-'l-Makārim Hibatallāh Ibn-Gumaiʻ; Ibn Jumi‘; Ibn Gumay‘
Fenton, Paul B., 'The state of Arab medicine at the time of Maimonides according to Ibn Gumay‘'s Treatise on the Revival of the Art of Medicine, in Fred Rosner and Samuel S. Kottek, ed., Moses Maimonides - Physician, Scientist and Philosopher, 1993