Leviticus 22:5-7 New International Version - UK (NIVUK)
5 or if he touches any crawling thing that makes him unclean, or any person who makes him unclean, whatever the uncleanness may be. 6 The one who touches any such thing will be unclean till evening. He must not eat any of the sacred offerings unless he has bathed himself with water. 7 When the sun goes down, he will be clean, and after that he may eat the sacred offerings, for they are his food.