Dr. Mustafa Khattab, the Clear Quran - 18:18

Translation for 18:18

And you would have thought they were awake,1 though they were asleep. We turned them over, to the right and left, while their dog stretched his forelegs at the entrance. Had you looked at them, you would have certainly fled away from them, filled with horror.

Foot notes

76892

 This is because, during their long sleep, their eyes were open, their hair grew long, and their bodies rolled over to the right and left to prevent bedsores.