Exodus 21:8-10 English Standard Version (ESV)

8. If she does not please her master, who has designated her for himself, then he shall let her be redeemed. He shall have no right to sell her to a foreign people, since he has broken faith with her.

9. If he designates her for his son, he shall deal with her as with a daughter.

10. If he takes another wife to himself, he shall not diminish her food, her clothing, or her marital rights.

Exodus 21