Leviticus 7:13-17

With the sacrifice of his peace offerings for thanksgiving, he shall present his offering with cakes of leavened bread.

Of this he shall present one of every offering as a contribution to the Lord; it shall belong to the priest who sprinkles the blood of the peace offerings.

‘Now as for the flesh of the sacrifice of his thanksgiving peace offerings, it shall be eaten on the day of his offering; he shall not leave any of it over until morning.

But if the sacrifice of his offering is a vow or a voluntary offering, it shall be eaten on the day that he offers his sacrifice, and on the next day what is left of it may be eaten;

but what is left over from the flesh of the sacrifice on the third day shall be burned with fire.