1 Corinthians 7:3, 5

The husband should fulfill his wife’s sexual needs, and the wife should fulfill her husband’s needs.

Do not deprive each other of sexual relations, unless you both agree to refrain from sexual intimacy for a limited time so you can give yourselves more completely to prayer. Afterward, you should come together again so that Satan won’t be able to tempt you because of your lack of self-control.