“This is about the words of Allah, most High, ‘It is lawful for you to have carnal relation with your wives during the night of the fast. . . .’ (2:187) One of the two Imam, (abu Ja’far or abu ‘Abd Allah), ‘Alayhim al-Salam, has said that it was revealed about the case of Khawwat ibn Jubayr al-Ansariy. He was with the Holy prophet, O Allah, grant compensation to Muhammad and his family worthy of their services to Your cause, at the time of digging the ditch and fasting. It became evening. At that time, before the revelation of this verse, if anyone slept, eating and drinking became unlawful for him. Khawwat went home to his family in the evening and asked for food. They said that it is not ready yet so you must wait until food is prepared for you. He leaned and fell asleep. They asked him, ‘Did you do it (sleep)?’ He replied, ‘Yes, I did.’ He remained in that condition until the morning, then went to work in the ditches and would faint. The Messenger of Allah passed by and asked about his condition, which he informed him of his story. Allah, most Majestic, most Glorious, then sent down this verse, ‘Eat and drink until the white twine appears to you from the black twine in the morning.’ (2:187)”