Numbers 18:9-19

You are to have the part of the most holy offerings that is kept from the fire. From all the gifts they bring me as most holy offerings, whether grain or sin or guilt offerings, that part belongs to you and your sons. Eat it as something most holy; every male shall eat it. You must regard it as holy. “This also is yours: whatever is set aside from the gifts of all the wave offerings of the Israelites. I give this to you and your sons and daughters as your perpetual share. Everyone in your household who is ceremonially clean may eat it. “I give you all the finest olive oil and all the finest new wine and grain they give the LORD as the firstfruits of their harvest. All the land’s firstfruits that they bring to the LORD will be yours. Everyone in your household who is ceremonially clean may eat it. “Everything in Israel that is devoted to the LORD is yours. The first offspring of every womb, both human and animal, that is offered to the LORD is yours. But you must redeem every firstborn son and every firstborn male of unclean animals. When they are a month old, you must redeem them at the redemption price set at five shekels of silver, according to the sanctuary shekel, which weighs twenty gerahs. “But you must not redeem the firstborn of a cow, a sheep or a goat; they are holy. Splash their blood against the altar and burn their fat as a food offering, an aroma pleasing to the LORD. Their meat is to be yours, just as the breast of the wave offering and the right thigh are yours. Whatever is set aside from the holy offerings the Israelites present to the LORD I give to you and your sons and daughters as your perpetual share. It is an everlasting covenant of salt before the LORD for both you and your offspring.”