Exodus 12:8

4and if the household is too little for a lamb, then he and his neighbor next to his house shall take one according to the number of the souls. You shall make your count for the lamb according to what everyone can eat.

5Your lamb shall be without defect, a male a year old. You shall take it from the sheep or from the goats.

6You shall keep it until the fourteenth day of the same month; and the whole assembly of the congregation of Israel shall kill it at evening.

7They shall take some of the blood, and put it on the two door posts and on the lintel, on the houses in which they shall eat it.

8They shall eat the meat in that night, roasted with fire, with unleavened bread. They shall eat it with bitter herbs.

9Don’t eat it raw, nor boiled at all with water, but roasted with fire; with its head, its legs and its inner parts.

10You shall let nothing of it remain until the morning; but that which remains of it until the morning you shall burn with fire.

11This is how you shall eat it: with your belt on your waist, your sandals on your feet, and your staff in your hand; and you shall eat it in haste: it is the LORD’s Passover.

12For I will go through the land of Egypt in that night, and will strike all the firstborn in the land of Egypt, both man and animal. I will execute judgments against all the gods of Egypt. I am the LORD.