Exodus 21:7-11

“If a man sells his daughter to be a female servant, she shall not go free [after six years] as male servants do. If she does not please her master who has chosen her for himself [as a wife], he shall let her be redeemed [by her family]. He does not have the authority to sell her to a foreign people, because he has been unfair to her. If her master chooses her [as a wife] for his son, he shall act toward her as if she were legally his daughter. If her master marries another wife, he may not reduce her food, her clothing, or her privilege as a wife. If he does not do these three things for her, then shall she leave free, without payment of money.