1 Corinthians 7:4-5

The wife does not have full rights over her own body; her husband shares them. And the husband does not have full rights over his own body; his wife shares them. Do not refuse to give your bodies to each other, unless you both agree to stay away from sexual relations for a time so you can give your time to prayer. Then come together again so Satan cannot tempt you because of a lack of self-control.