Leviticus 7:15-16

15‘1Now 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.

16But if the sacrifice of his offering is a 23vow or a 4voluntary offering, it shall be eaten on the day that he offers his sacrifice, and on the next 5day what is left of it may be eaten;