Albert Barnes on Matthew 15:3

But he answered, etc. They accused him of violating their traditions, as though they were obligatory. In his answer he implied that they were not bound to obey their traditions. They were invented by men. He said also that those traditions could not be binding, as they violated the commandments of God. He proceeds to specify a case where their tradition made void one of the plain laws of God. And if that was their character, then they could not blame him for not regarding them.

Mt 15:1 (b) "your tradition?" Col 2:8, 23, Tit 1:14