Leviticus 22:5-7

⁵or whoever touches any creeping thing by which he may be made unclean, or a man from whom he may become unclean, whatever uncleanness he has—

⁶the person that touches any such shall be unclean until the evening, and shall not eat of the holy things unless he bathes his body in water.

⁷When the sun is down, he shall be clean; and afterward he shall eat of the holy things, because it is his bread.