Leviticus 7:18-21

18If any of the flesh of the sacrifice of his peace offering is eaten on the third day, he who offers it shall not be accepted, neither shall it be credited to him. It is tainted, and he who eats of it shall bear his iniquity. 19“Flesh that touches any unclean thing shall not be eaten. It shall be burned up with fire. All who are clean may eat flesh, 20but the person who eats of the flesh of the sacrifice of the LORD’s peace offerings while an uncleanness is on him, that person shall be cut off from his people. 21And if anyone touches an unclean thing, whether human uncleanness or an unclean beast or any unclean detestable creature, and then eats some flesh from the sacrifice of the LORD’s peace offerings, that person shall be cut off from his people.”