Exodus 21:10
If he takes an additional wife, he must not reduce the food, clothing, or marital rights of the first wife.
1 Corinthians 7:1-6
Now in response to the matters you wrote
Treasury of Scripture Knowledge
Summary
If he take him another wife; her food, her raiment, and her duty of marriage, shall he not diminish.
Her food
General references
Bible References
Her food
1 Corinthians 7:1
Now in response to the matters you wrote about: “It is good for a man not to have relations with a woman.”
General references
1 Corinthians 7:3
A husband should fulfill his marital responsibility to his wife, and likewise a wife to her husband.