Tractate Sanhedrin: Those Punishable By Decapitation (continued): (1) Who strikes his Father or Mother
Tractate Sanhedrin, Herbert Danby tr. [1919]
He who strikes his father or mother 6 is not guilty till he bruise them. Cursing is more serious
M.than striking: for he who curses after death is guilty, while he who strikes after death is free from penalty.
136:6 Exod. 21. 15.