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 And thus did We rouse them that they might question each other. A speaker among them said: How long have you tarried? They said: We have tarried for a day or a part of a day. (Others) said: Your Lord knows best how long you have tarried. Now send one of you with this silver (coin) of yours to the city, then let him see which of them has purest food, so let him bring you provision from it, and let him behave with gentleness, and by no means make your case known to any one: 19 For they, if they should come to know of you, will stone you or turn you back to their religion; then ye will never prosper. 20 And so We made them (the unbelievers) stumble upon them, so that they might know that the promise of Allah is true and that there is no doubt about the Hour. They argued among themselves over their affair, then (the unbelievers) said: 'Build a building over them (their remains). Their Lord knows best who they were. 'But those who prevailed over the matter said; 'We will build around them a Mosque' 21 So the people will now say, “They are three, their dog is the fourth”; and some will say, “They are five, their dog is the sixth” – just blind guesses; and some will say, “They are seven, and their dog is the eighth”; proclaim (O dear Prophet Mohammed – peace and blessings be upon him), “My Lord well knows their number – no one knows them except a few”; therefore do not debate concerning them except what has occurred, and do not ask any of the People of the Book(s) anything concerning them. 22