Leviticus 7:16-18

16But if the sacrifice of his offering is a 12vow or a 3voluntary offering, it shall be eaten on the day that he offers his sacrifice, and on the next 4day what is left of it may be eaten; 175but what is left over from the flesh of the sacrifice on the third day shall be burned with fire. 18So if any of the flesh of the sacrifice of his peace offerings is ever eaten on the third day, he who offers it will not be accepted, and it will not be credited to him. It will be an 6unclean thing, and the person who eats it shall bear his punishment.