Mark 7:1-4

Now the Pharisees and some of the scribes came from Jerusalem and gathered around Him, and they had seen that some of His disciples ate their bread with [ceremonially] impure hands, that is, unwashed [and defiled according to Jewish religious ritual]. (For the Pharisees and all of the Jews do not eat unless they carefully wash their hands, holding firmly to the traditions of the elders; and when they come from the market place, they do not eat unless they cleanse themselves [completely according to ritual]; and there are many other things [oral, man-made laws and traditions handed down to them] which they follow diligently, such as the washing of cups and pitchers and copper utensils.)