Exodus 21:22-26

“Now if people struggle with each other and strike a pregnant woman so that she gives birth prematurely, but there is no injury, the guilty person shall certainly be fined as the woman’s husband may demand of him, and he shall pay as the judges decide.

But if there is any further injury, then you shall appoint as a penalty life for life,

eye for eye, tooth for tooth, hand for hand, foot for foot,

burn for burn, wound for wound, bruise for bruise.

“And if someone strikes the eye of his male or female slave and destroys it, he shall let the slave go free on account of the eye.