18:19Even so, We awakened them, so that they may ask one another. A speaker among them said, “How long have you stayed?” They said, “We have stayed a day, or part of a day.” They said, “Your Lord knows best how long you have stayed.” “Send one of you to the city, with this money of yours, and let him see which food is most suitable, and let him bring you some provision thereof. And let him be gentle, and let no one become aware of you.”

18:21So it was, that We caused them to be discovered, that they would know that the promise of God is true, and that of the Hour there is no doubt. As they were disputing their case among themselves, they said, “Build over them a building.” Their Lord knows best about them. Those who prevailed over their case said, “We will set up over them a place of worship.”