Punishment: Death Penalty for Striking or Cursing One's Father or Mother
Source: Nav
Exodus 21:15, 17
Whoever strikes his father or mother must surely be put to death. / Anyone who curses his father or mother must surely be put to death.
Leviticus 20:9
If anyone curses his father or mother, he must be put to death. He has cursed his father or mother; his blood shall be upon him.