Mark 7:1-4 NIV

[1] The Pharisees and some of the teachers of the law who had come from Jerusalem gathered around Jesus [2] and saw some of his disciples eating food with hands that were defiled, that is, unwashed. [3] (The Pharisees and all the Jews do not eat unless they give their hands a ceremonial washing, holding to the tradition of the elders. [4] When they come from the marketplace they do not eat unless they wash. And they observe many other traditions, such as the washing of cups, pitchers and kettles.)