And you may think they are awake, whereas they are asleep; and We turn them over to the right and the left – and their dog is on the threshold of the cave, with its paws outstretched; O listener, were you to look at them closely, you would turn back running away from them, and be filled with their dread. 18 As such We revived them so that they might question one another. 'How long have you stayed here' asked one of them. 'We have been here a day, or part of it' they replied. They said: 'Your Lord knows best how long we have stayed here. Let one of you go to the city with this silver (coin) and let him search for one who has the purest food and bring provision from it. Let him be courteous, but let no one sense it is you. 19 If they come to know of you they will stone you to death, or force you to go back to their creed; then you will never succeed." 20 Thus We disclosed things to them so that they might know that God's promise was true and there was no doubt about the Hour [Judgement Day]. The people argued about them among themselves. They said, "Build a monument over them. Their Lord knows best concerning them." Those who prevailed in their affair said, "Let us surely build a place of worship over them." 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