His pupils were coming from Austria, Bohemia, Moravia, Hungary, Silesia, Bavaria, and the Rhineland, among them Israel Bruna, Moses Mintz, and Joseph b. Moses. He is considered as an ideal type of medieval rabbi, who demanded from the community and its members a strict observance of ritual laws, social justice and fairness in business and commerce. He was prone to mysticism, studied kabbalistic works and accepted some kabbalistic customs as his own, even though he was also acquainted with the contemporary Christian scientific literature. He often served as an arbitrator between different communities and his decision was considered final. With the appearance of the press and the codification of "halachah" his responsa were included in numerous collections, the most prominent being the "Shulchan Aruch". His works include: Trumat ha-Deshen, 354 responses, edited by himself, and Psakim u-Chtavim, 267 responses, edited by his pupils after his death (both printed in Venice already in 1519), "Beurim", commentaries on Rashi's Commentary on Torah, "36 Shearim" (36 Gates), laws on Kashrut, and "Seder Gitin", a handbook for divorces.