Thou wouldst have thought them awake, as they lay sleeping, while We turned them now to the right, now to the left,' and their dog 'stretching its paws on the threshold. Hadst thou observed them surely thou wouldst have turned thy back on them in flight, and been filled with terror of them. 18 In the course of time, We raised them up again so that they might question one another. One of them asked, "How long have you stayed [here]?" They said, "We have stayed a day, or part of a day." But others said, "Your Lord knows best how long you have stayed here. Let one of you go then with these silver coins to the town, and let him find out what food is purest there, and bring you back a supply of it. Let him conduct himself with caution and not disclose your whereabouts to anyone: 19 For if they should come upon us, they will stone us to death or force us to revert to their faith whereafter we shall never prosper." 20 We caused their story to become public so that people would know that God's promise was true and that there is no doubt about the coming of the Day of Judgment. They started to argue with each other about the matter (Resurrection) and some of them said, "Let us establish a building at the youths' sleeping place (to hide them). Their Lord knew best their intentions about them. The majority prevailed in their suggestion of the establishment of a mosque in that place. 21 They will say there were three, the fourth of them being their dog; and they will say there were five, the sixth of them being their dog - guessing at the unseen; and they will say there were seven, and the eighth of them was their dog. Say, [O Muhammad], "My Lord is most knowing of their number. None knows them except a few. So do not argue about them except with an obvious argument and do not inquire about them among [the speculators] from anyone." 22