And you would think them awake, while they were asleep. And We turned them to the right and to the left, while their dog stretched his forelegs at the entrance. If you had looked at them, you would have turned from them in flight and been filled by them with terror. 18 We roused them from their sleep so that they would question each other about their stay in the cave. One of them said, "How long do you think we have stayed here?" They replied, "A day or part of a day." They added, " Your Lord knows better how long we have stayed here. Let us send one of us with this money to the city to get some pure food so that we might eat. He should be careful so that no one will know about us. If they were to recognize us, 19 For surely if they prevail against you they would stone you to death or force you back to their religion, and then you will never succeed. 20 Thus did We inform the people about them that they may know the promise of God is true, and there is no doubt that the Hour will come. As they were arguing among themselves as to what should be done with them, (some) said: "Erect a monument over them. Their Lord is best cognisant of them." Those who prevailed, said: "We shall build a place of worship over their (sepulchre)." 21 (With regard to the number of the youths) some say, "There were three and the dog was the fourth one," Others say, "There were five and the dog was the sixth one." In reality, they are just feeling around in the dark. Still some of them say, "There were seven and the dog was the eighth one." (Muhammad), say, "My Lord has the best knowledge of their number. You know very little about it." Do not insist on arguing with them, but merely tell them the story as it has been revealed to you and do not ask anyone about them. 22