Numbers 18:17-19

Complete Jewish Bible

¹⁷ But the firstborn of an ox, sheep or goat you are not to redeem; they are holy — you are to splash their blood against the altar and make their fat go up in smoke as an offering made by fire, as a fragrant aroma for Adonai. ¹⁸ Their meat will be yours, like the breast that is waved and the right thigh — they will be yours. ¹⁹ All the contributions of holy things which the people of Isra’el offer to Adonai I have given to you, your sons and your daughters with you; this is a perpetual law, an eternal covenant of salt before Adonai for you and your descendants with you.”