 He was a colleague of Rav Nachman, with whom he had frequent arguments concerning questions of religious law.His teacher's name is not definitely known, but Rav Sheshet was an auditor at Rav Huna's lectures.It is certain that he was "not" a pupil of Rav, since when certain sayings of Rav displeased him, he criticized them with a disrespect which he would not have shown toward his own teacher, saying