Would give money to a non-Jewish child to plant gourds in a vineyard, although it was permitted for Jews to do it themselves outside Israel, to prevent people from extrapolating an inaccurate leniency: Shabbat 139a
Abbaye was surprised when Rav Mesharshiya and the scholars didn't stand for him when he was on the other side of a river; they explained that they hadn't noticed his presence: Kiddushin 33a
Rav Mesharshiya sent his son to ask a question regarding a law's detail; Rav Pappa prefaced his response to the son, 'If we would be so careful to include such details when teaching, we would never teach at all!': Eruvin 48a
