Al-Kahf 18:17

You would have seen the sun when it rose, it would incline away from their Cave to the right; and when it set, it would turn away from them to the left[11], while they were in its open space. That was one of the signs of Allah. Whoever Allah guides is rightly guided, and whoever He causes to stray, you will never find for him a protecting guide.

[11] As such they would get all the air and ventilation they needed to sustain.

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 [lying] within an open space thereof. That was from the signs of Allāh. He whom Allāh guides is the [rightly] guided, but he whom He sends astray - never will you find for him a protecting guide.

17. And you might have seen the sun, when it rose, declining to the right from their Cave, and when it set, turning away from them to the left, while they lay in the midst of the Cave. That is (one) of the Ayât (proofs, evidence, signs) of Allâh. He whom Allâh guides, he is the rightly guided; but he whom He sends astray, for him you will find no Walî (guiding friend) to lead him (to the right Path).

And thou mightest have seen the sun when it rose move away from their cave to the right, and when it set go past them on the left, and they were in the cleft thereof. That was (one) of the portents of Allah. He whom Allah guideth, he indeed is led aright, and he whom He sendeth astray, for him thou wilt not find a guiding friend.