Leviticus 7:17
7:17 but the leftovers from the meat of the sacrifice must be burned up in the fire on the third day.
Leviticus 19:6
19:6 It must be eaten on the day of your sacrifice and on the following day, but what is left over until the third day must be burned up.
Leviticus 7:19
7:19 The meat which touches anything ceremonially unclean must not be eaten; it must be burned up in the fire. As for ceremonially clean meat, everyone who is ceremonially clean may eat the meat.