18:5They have no knowledge of this, nor did their forefathers. Grave is the word that comes out of their mouths. They say nothing but a lie.

18:9Did you know that the People of the Cave and the Inscription were of Our wondrous signs?

18:12Then We awakened them to know which of the two groups could better calculate the length of their stay.

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.”

18:22They will say, “Three, and their fourth being their dog.” And they will say, “Five, and their sixth being their dog,” guessing at the unknown. And they will say, “Seven, and their eighth being their dog.” Say, “My Lord knows best their number.” None knows them except a few. So do not argue concerning them except with an obvious argument, and do not consult any of them about them.

18:26Say, “God knows best how long they stayed.” His is the mystery of the heavens and the earth. By Him you see and hear. They have no guardian apart from Him, and He shares His Sovereignty with no one.

18:65Then they came upon a servant of Ours, whom We had blessed with mercy from Us, and had taught him knowledge from Our Own.

18:68And how will you endure what you have no knowledge of?”

18:91And so it was. We had full knowledge of what he had.