Exodus 21:10 in the World English Bible
If he takes another wife to himself, he shall not diminish her food, her clothing, and her marital rights.
Context
9 And if he have betrothed her unto his son, he shall deal with her after the manner of daughters.
10 If he take him another wife; her food, her raiment, and her duty of marriage, shall he not diminish.
11 And if he do not these three unto her, then shall she go out free without money.