Leviticus 7:18-21

18And if any of the flesh of the sacrifice of his peace offerings shall be eaten at all on the third day, it shall not be accepted, neither shall it be imputed to him that offereth it: it shall be an abomination, and the soul that eateth of it shall bear his iniquity. 19And the flesh that toucheth any unclean thing shall not be eaten; it shall be burnt with fire: and as for the flesh, all that shall be clean shall eat of it. 20But the soul that eateth of the flesh of the sacrifice of peace offerings, that pertain to the LORD, having his uncleanness upon him, even that soul shall be cut off from his people. 21Moreover the soul that shall touch any unclean thing, as the uncleanness of man, or any unclean beast, or any abominable unclean thing, and eat of the flesh of the sacrifice of peace offerings, which pertain to the LORD, even that soul shall be cut off from his people.