In Matthew 15, Which of God's commands did Jesus criticize the Pharisees for not obeying?

The commandment to kill children who curse their parents

But he answered and said unto them, Why do ye also transgress the commandment of God by your tradition?

For God commanded, saying, Honour thy father and mother: and, He that curseth father or mother, let him die the death.

But ye say, Whosoever shall say to his father or his mother, It is a gift, by whatsoever thou mightest be profited by me;

And honour not his father or his mother, he shall be free. Thus have ye made the commandment of God of none effect by your tradition. Matthew 15:3-6