Since a son cannot hit his parents, can that son sit on a court that would decide the case of his father being subject to lashes, for example? Rav Sheshet says yes, and the Gemara jumps to defend his approach, though then his view is countered in a sharp why. Also: 2 new mishnayot: First, one who hits his father or mother is only subject to execution if he actually injures the parent (but only if the hitting takes place while the parent is alive). Second, when it comes to kidnapping, the kidnapper is only liable for execution when he brings the captive into his own domain -- and possibly only after the kidnapper has exploited his captive.