Exodus 21:2-11 - Laws About Slaves
2 If thou buy a Hebrew servant, six years he shall serve, and in the seventh he shall go out free for nothing. 3 If he comes in by himself, he shall go out by himself. If he be married, then his wife shall go out with him. 4 If his master gives him a wife and she bears him sons or daughters, the wife and her sons shall be her master's, and he shall go out by himself.
5 But if the servant shall plainly say, I love my master, my wife, and my sons, I will not go out free, 6 then his master shall bring him to God, and shall 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 maid-servant, she shall not go out as the men-servants do. 8 If she does not please her master, who has espoused her to himself, then he shall let her be redeemed. He shall have no power to sell her to a foreign people, since he has dealt deceitfully with her. 9 And if he espouses her to his son, he shall deal with her according to the manner of daughters. 10 If he takes him another [wife], her food, her raiment, and her duty of marriage, he shall not diminish. 11 And if he does not do these three things to her, then she shall go out for nothing, without money.