You shall let none of it remain until morning, and what remains of it until morning you shall burn with fire.
Exodus 12:10
Surrounding context
12:9 Do not eat it raw, nor boiled at all with water, but roasted in fire--its head with its legs and its entrails.
12:10 You shall let none of it remain until morning, and what remains of it until morning you shall burn with fire.
12:11 And thus you shall eat it: with a belt on your waist, your sandals on your feet, and your staff in your hand. So you shall eat it in haste. It is the LORD's Passover.