 He practised medicine, and was the author of a medical work, manuscript copies of which are still extant at Oxford and Munich.Such was his reputation as a physician that patients came long distances to consult him, and some are said to have journeyed even from Mainz (e.g., Solomon ben Hananel).Benveniste, whose generosity is praised by Al-Ḥarizi, was poetically gifted and composed several liturgical songs.