Exodus 13:12
you are to present to the LORD the firstborn male of every womb. All the firstborn males of your livestock belong to the LORD.
Berean Standard Bible
That thou shalt set apart unto the LORD all that openeth the matrix, and every firstling that cometh of a beast which thou hast; the males shall be the LORD’s.
that you shall set apart to the LORD all that opens the womb, and every firstborn that comes from an animal which you have. The males shall be the LORD’s.