You are allowed to sleep with your wives on the nights of the fast: They are your dress as you are theirs. God is aware you were cheating yourselves, so He turned to you and pardoned you. So now you may have intercourse with them, and seek what God has ordained for you. Eat and drink until the white thread of dawn appears clear from the dark line, then fast until the night falls; and abstain from your wives (when you have decided) to stay in the mosques for assiduous devotion. These are the bounds fixed by God, so keep well within them. So does God make His signs clear to men that they may take heed for themselves.
— Quran 2:187