We relate to thee their story in truth: they were youths who believed in their Lord, and We advanced them in guidance: 13 And We braced their hearts when they stood forth and said: our Lord is the Lord of the heavens and the earth; never we shall call upon a god beside him; for then we shall be saying an abomination. 14 These our people have taken to them other gods, apart from Him. Ah, if only they would bring some clear authority regarding them! But who does greater evil than he who forges against God a lie? 15 And now when ye have withdrawn from them and that which they worship, except God, betake yourselves to the cave; your Lord will unfold for you some of His mercy, and will prepare for you of your affair an easy arrangement. 16 ۞ And [had you been present], you would see the sun when it rose, inclining away from their cave on the right, and when it set, passing away from them on the left, while they were [laying] within an open space thereof. That was from the signs of Allah. He whom Allah guides is the [rightly] guided, but he whom He leaves astray - never will you find for him a protecting guide. 17