Leviticus 7:19-21 New Revised Standard Version (NRSV)
19 Flesh that touches any unclean thing shall not be eaten; it shall be burned up. As for other flesh, all who are clean may eat such flesh. 20 But those who eat flesh from the Lord’s sacrifice of well-being while in a state of uncleanness shall be cut off from their kin. 21 When any one of you touches any unclean thing—human uncleanness or an unclean animal or any unclean creature—and then eats flesh from the Lord’s sacrifice of well-being, you shall be cut off from your kin.