Numbers 18:15-18 Expanded Bible (EXB)
15 The ·first one born [L one that opens the womb] to any family, whether people or animals, will be offered to the Lord. And that will be yours. But you must ·make a payment for [ransom; redeem] every firstborn child and every firstborn animal that is unclean [C in a ritual sense]. 16 When they are one month old, you ·must make a payment for [ransom; redeem] them of ·two ounces [L five shekels, that is twenty gerahs] of silver, as set by the Holy Place measure [3:40–50; Ex. 13:2, 11–16].
17 “But you must not ·make a payment for [ransom; redeem] the firstborn ox or sheep or goat. Those animals are holy. ·Sprinkle [Dash] their blood on the altar and ·burn [turn into smoke] their fat as an offering made by fire. The smell is pleasing to the Lord. 18 But the meat will be yours, just as the breast that is presented and the right thigh will be yours.