Mark 7:2-4

2 who upon seeing some of his disciples eat bread with common, that is to say, with unwashed, hands, they condemned them.

3 (For the Pharisees and all the Jews, unless they wash their hands often, eat not, holding the tradition of the elders.

4 And when they come from the market, unless they wash, they eat not. And there are many other things which they took upon themselves to hold such as the washing of cups and pots, brasen vessels and of tables.)