Parallel
Numbers 18:15
Brenton's English Septuagint · Berean Standard Bible
And every thing that opens the womb of all flesh, whatsoever they bring to the Lord, whether man or beast, shall be thine: only the first-born of men shall be surely redeemed, and thou shalt redeem the first-born of unclean cattle.
The firstborn of every womb, whether man or beast, that is offered to the LORD belongs to you. But you must surely redeem every firstborn son and every firstborn male of unclean animals.