Exodus 1:15-16

And the king of Egypt spake to the Hebrew midwives, of which the name of the one {was} Shiphrah, and the name of the other Puah: And he said, When ye do the office of a midwife to the Hebrew women, and see {them} upon the stools; if it {be} a son, then ye shall kill him: but if it {be} a daughter, then she shall live.