His poems, both secular and religious, contained in his Diwan and scattered in the liturgy, are all in Hebrew, though he employed Arabic metres.
The directors were determined "to stand forth as diwan, and take upon themselves by their own servants the entire management of the revenues."
He wrote numerous translations, of Galen, Aristotle, Ilariri, IIunain ben Isaac and Maimonides, as well as several original works, a Sepher Anaq in imitation of Moses ben Ezra, and treatises on grammar and medicine (Rephuath geviyyah), but he is best known for his Talzkemoni, a diwan in the style of Ilariri's Magimat.
About 1330), perhaps the friend and certainly the imitator of Dante, wrote his diwan, of which the last part, "Topheth ve-`Eden," is suggested by the Divina Commedia.
A little to the south of a village called Deir Diwan, and one hour's journey south-east from Bethel, is the site of an ancient place called Khirbet Haiydn, indicated by reservoirs hewn in the rock, excavated tombs and foundations of hewn stone.