Numbers 18:17 YLT

¹⁵  every one opening a womb of all flesh which they bring near to Jehovah, among man and among beast, is thine; only, thou dost certainly ransom the first-born of man, and the firstling of the unclean beast thou dost ransom.

¹⁶  'And their ransomed ones from a son of a month, thou dost ransom with thy valuation, of silver, five shekels, by the shekel of the sanctuary, twenty gerahs it 'is'.

¹⁷  'Only, the firstling of a cow, or the firstling of a sheep, or the firstling of a goat, thou dost not ransom, holy they 'are': their blood thou dost sprinkle on the altar, and of their fat thou makest perfume, a fire-offering of sweet fragrance to Jehovah,

¹⁸  and their flesh is thine, as the breast of the wave-offering, and as the right leg, it is thine;

¹⁹  all the heave-offerings of the holy things which the sons of Israel lift up to Jehovah I have given to thee and to thy sons, and to thy daughters with thee, by a statute age-during, a covenant of salt, age-during it 'is' before Jehovah, to thee and to thy seed with thee.'