Leviticus 7:16-18

16“‘If his offering is a votive or freewill sacrifice, it may be eaten on the day he presents his sacrifice, and also the leftovers from it may be eaten on the next day,

17but the leftovers from the meat of the sacrifice must be burned up in the fire on the third day.

18If some of the meat of his peace offering sacrifice is ever eaten on the third day it will not be accepted; it will not be accounted to the one who presented it, since it is spoiled, and the person who eats from it will bear his punishment for iniquity.