Exodus 21:10 in the King James Version
If he take him another wife; her food, her raiment, and her duty of marriage, shall he not diminish.
Context
9 If he marries her to his son, he shall deal with her as a daughter.
10 If he takes another wife to himself, he shall not diminish her food, her clothing, and her marital rights.
11 If he doesn’t do these three things for her, she may go free without paying any money.