Mark 7:2-4

2 They noticed that some of his disciples weren't being careful with ritual washings before meals.

3 The Pharisees - Jews in general, in fact - would never eat a meal without going through the motions of a ritual hand-washing,

4 with an especially vigorous scrubbing if they had just come from the market (to say nothing of the scourings they'd give jugs and pots and pans).