Exodus 21:2-11 - Laws About Slaves
2 If you buy a Hebrew servant, he shall serve six years. And in the seventh he shall go out free for nothing. 3 If he came in by himself, he shall go out by himself. If he was married, then his wife shall go out with him. 4 If his master has given him a wife, and she has borne him sons or daughters, the wife and her children shall be her master's, and he shall go out by himself.
5 And if the servant shall plainly say, I love my master, my wife, and my sons. I do not want to go out free 6 his master shall bring him to the judges. He shall also bring him to the door or to the door-post. And his master shall bore his ear through with an awl, and he shall serve him forever.
7 And if a man sells his daughter to be a maidservant, she shall not go out as the menservants do. 8 If she does not please her master, who has betrothed her to himself, then he shall let her be redeemed. He shall have no power to sell her to a strange nation, since he has dealt deceitfully with her. 9 And if he has betrothed her to his son, he shall deal with her as with daughters. 10 If he takes himself another wife, her food, her clothing, and her duty of marriage shall not be lessened. 11 And if he does not do these three to her, then she shall go out free without money.