Deuteronomy 15:19-23

Set apart to GOD, your God, all the firstborn males in your herds and flocks. Don’t use the firstborn from your herds as work animals; don’t shear the firstborn from your flocks. These are for you to eat every year, you and your family, in the Presence of GOD, your God, at the place that GOD designates for worship. If the animal is defective, lame, say, or blind—anything wrong with it—don’t slaughter it as a sacrifice to GOD, your God. Stay at home and eat it there. Both the ritually clean and unclean may eat it, the same as with a gazelle or a deer. Only you must not eat its blood. Pour the blood out on the ground like water. * * *