Leviticus 7:16-18

16If, however, the sacrifice he offers is a vow or a freewill offering, it shall be eaten on the day he presents his sacrifice, but the remainder may be eaten on the next day. 17But any meat of the sacrifice remaining until the third day must be burned up. 18If any of the meat from his peace offering is eaten on the third day, it will not be accepted. It will not be credited to the one who presented it; it shall be an abomination, and the one who eats of it shall bear his iniquity.