Isaac's conspicuous piety drew toward him many disciples, the best known of whom were Perez ben Elijah of Corbeil (Rabbeinu Perez), Baruch Ḥayyim ben Menahem of Niort, and his fellow citizen Joseph ben Abraham.
Isaac's piety attracted many disciples, notably Rabbeinu Perez, Baruch Ḥayyim ben Menahem, and Joseph ben Abraham.