Numbers 18:16-18

Complete Jewish Bible

¹⁶ The sum to be paid for redeeming anyone a month old or over is to be five shekels of silver [two ounces], as you value it, using the sanctuary shekel (this is the same as twenty gerahs). 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.