Leviticus 19:5-9

And if ye offer a sacrifice of peace offerings unto the LORD, ye shall offer it at your own will.

It shall be eaten the same day ye offer it, and on the morrow: and if ought remain until the third day, it shall be burnt in the fire.

And if it be eaten at all on the third day, it is abominable; it shall not be accepted.

Therefore every one that eateth it shall bear his iniquity, because he hath profaned the hallowed thing of the LORD: and that soul shall be cut off from among his people.

And when ye reap the harvest of your land, thou shalt not wholly reap the corners of thy field, neither shalt thou gather the gleanings of thy harvest.