Exodus 12:7-10

And they shall take some of the blood and put it on the two doorposts and on the lintel of the houses where they eat it. Then they shall eat the flesh on that night; roasted in fire, with unleavened bread and with bitter herbs they shall eat it. Do not eat it raw, nor boiled at all with water, but roasted in fire—its head with its legs and its entrails. You shall let none of it remain until morning, and what remains of it until morning you shall burn with fire.