Exodus 21:23

20 “When a man strikes his slave, male or female, with a rod and the slave dies under his hand, he shall be avenged. 21 But if the slave survives a day or two, he is not to be avenged, for the slave is his money.

22 “When men strive together and hit a pregnant woman, so that her children come out, but there is no harm, the one who hit her shall surely be fined, as the woman’s husband shall impose on him, and he shall pay as the judges determine. 23 But if there is harm, then you shall pay life for life, 24 eye for eye, tooth for tooth, hand for hand, foot for foot, 25 burn for burn, wound for wound, stripe for stripe.

26 “When a man strikes the eye of his slave, male or female, and destroys it, he shall let the slave go free because of his eye.