Exodus 21:7-10 New International Version (NIV)

⁷ “If a man sells his daughter as a servant, she is not to go free as male servants do. ⁸ If she does not please the master who has selected her for himself,^[a] he must let her be redeemed. He has no right to sell her to foreigners, because he has broken faith with her. ⁹ If he selects her for his son, he must grant her the rights of a daughter. ¹⁰ If he marries another woman, he must not deprive the first one of her food, clothing and marital rights.