Leviticus 22:1-10

1 The Lord spoke to Moses, saying:
2 Direct Aaron and his sons to deal carefully with the sacred donations of the people of Israel, which they dedicate to me, so that they may not profane my holy name; I am the Lord.
3 Say to them: If anyone among all your offspring throughout your generations comes near the sacred donations, which the people of Israel dedicate to the Lord, while he is in a state of uncleanness, that person shall be cut off from my presence: I am the Lord.
4 No one of Aaron's offspring who has a leprous disease or suffers a discharge may eat of the sacred donations until he is clean. Whoever touches anything made unclean by a corpse or a man who has had an emission of semen,
5 and whoever touches any swarming thing by which he may be made unclean or any human being by whom he may be made unclean—whatever his uncleanness may be—
6 the person who touches any such shall be unclean until evening and shall not eat of the sacred donations unless he has washed his body in water.
7 When the sun sets he shall be clean; and afterward he may eat of the sacred donations, for they are his food.
8 That which died or was torn by wild animals he shall not eat, becoming unclean by it: I am the Lord.
9 They shall keep my charge, so that they may not incur guilt and die in the sanctuary for having profaned it: I am the Lord; I sanctify them.
10 No lay person shall eat of the sacred donations. No bound or hired servant of the priest shall eat of the sacred donations;