Leviticus 22:5-7

New Catholic Bible

⁵ or whoever touches any creeping thing that can make him unclean, or touches a man whose uncleanness he acquires, whatever the source of uncleanness, ⁶ if someone touches one such a person, then he shall be unclean until the evening, and he shall not eat of the holy things unless he bathes himself with water. ⁷ When the sun sets, he shall be clean. He can then eat the holy things, for it is his food.