Exodus 21:20-23

20And if a man smite his servant, or his maid, with a rod, and he die under his hand; he shall surely be punished. 21Notwithstanding, if he continue a day or two, he shall not be punished: for he is his money.

22And if men strive together, and hurt a woman with child, so that her fruit depart, and yet no harm follow; he shall be surely fined, according as the woman’s husband shall lay upon him; and he shall pay as the judges determine. 23But if any harm follow, then thou shalt give life for life,