Al-Baqarah 2:187 احل لكم ليلة الصيام الرفث الى نسايكم هن لباس لكم وانتم لباس لهن علم الله انكم كنتم تختانون انفسكم فتاب عليكم وعفا عنكم فالان باشروهن وابتغوا ما كتب الله لكم وكلوا واشربوا حتى يتبين لكم الخيط الابيض من الخيط الاسود من الفجر ثم اتموا الصيام الى الليل ولا تباشروهن وانتم عاكفون في المساجد تلك حدود الله فلا تقربوها كذالك يبين الله اياته للناس لعلهم يتقون ١٨٧

It has been made lawful for you to go in to your wives during the night of the fast. They are your garment, and you are theirs.¹ Allah knows that you used to betray yourselves and He mercifully relented and pardoned you. So you may now associate intimately with your wives and benefit from the enjoyment Allah has made lawful for you,² and eat and drink³ at night until you can discern the white streak of dawn against the blackness of the night;⁴ then (give up all that and) complete your fasting until night sets in.⁵ But do not associate intimately with your wives during the period when you are on retreat in the mosques.⁶ These are the bounds set by Allah; do not, then, even draw near them.⁷ Thus does Allah make His Signs clear to mankind that they may stay away from evil.