Leviticus 19:5-8

“ ‘When you sacrifice a fellowship offering to the LORD, sacrifice it in such a way that it will be accepted on your behalf. It shall be eaten on the day you sacrifice it or on the next day; anything left over until the third day must be burned up. If any of it is eaten on the third day, it is impure and will not be accepted. Whoever eats it will be held responsible because they have desecrated what is holy to the LORD; they must be cut off from their people.