In Mark 7, what commandment did Jesus criticize the Pharisees for not obeying?

The commandmet to kill children who curse their parents

(See Ex 21:15, Lev 20:9, Dt 21:18-21)

Jesus was defending himself when the Pharisees accused him of not washing his hands before eating.

He [Jesus] said unto them, Full well ye reject the commandment of God, that ye may keep your own tradition.

For Moses said, Honour thy father and thy mother; and, Whoso curseth father or mother, let him die the death. Mark 7:9-10