Leviticus 7:16-18

16But if the sacrifice of his offering is a vow or a freewill offering, it shall be eaten on the day that he offers his sacrifice, and on the next day that which remains of it may be eaten;

17but what is left over from the meat of the sacrifice on the third day shall be [completely] burned in the fire.

18If any of the meat of the sacrifice of his peace offerings is ever eaten on the third day, then it will not be accepted, and the one who brought it will not be credited with it. It shall be an abhorred (offensive) thing; the one who eats it shall bear his own guilt.