Leviticus 7:17-19

New Revised Standard Version Catholic Edition

¹⁷ but what is left of the flesh of the sacrifice shall be burned up on the third day. ¹⁸ If any of the flesh of your sacrifice of well-being is eaten on the third day, it shall not be acceptable, nor shall it be credited to the one who offers it; it shall be an abomination, and the one who eats of it shall incur guilt.

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.