Exodus Chapter 13, Verse 12

12: 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.- edit KJV text
12: Thou shalt set apart all that openeth the womb for the Lord, and all that is first brought forth of thy cattle: whatsoever thou shalt have of the male sex, thou shalt consecrate to the Lord.— edit Douay text
12: that thou shalt set apart every [offspring] opening the womb, the males to the Lord, every one that opens the womb out of the herds or among thy cattle, as many as thou shalt have: thou shalt sanctify the males to the Lord.— edit LXX text