Now when the Pharisees gathered to him, with some of the scribes who had come from Jerusalem, they saw that some of his disciples ate with hands that were defiled, that is, unwashed. (For the Pharisees and all the Jews do not eat unless they wash their hands, holding to the traditions of the elders, and when they come from the market-place, they do not eat unless they wash. And there are many other traditions that they observe, such as the washing of cups and pots and copper vessels and dining couches.) And the Pharisees and the scribes asked him, “Why do your disciples not walk according to the tradition of the elders, but eat with defiled hands?”.
See how these representatives of the religious authorities were quick to criticize the disciples as an excuse for finding fault with Yeshu himself. How could he let them be so unholy!
They insisted that in order to be godly, people (even those who seemed like nomads to them) should keep all the multiple details of their own invented traditions.