 Jacob ben Hanina (possibly the R. Jacob whose patronymic is not given and in whose name Judah quotes halakhic sentences) is also mentioned as one of Judah's teachers, and is said to have asked him to repeat halakhic sentences.Judah was also taught by his father (Simon ben Gamaliel); when the two differed on a halakhic matter, the father was generally stricter.Judah himself says