The word(s) "asleep" appears 4 time(s) in 4 verse(s) in Quran in Mohsin Khan translation.

(1) It is He Who takes your souls by night (when you are asleep), and has knowledge of all that you have done by day, then He raises (wakes) you up again that a term appointed (your life period) be fulfilled, then (in the end) unto Him will be your return. Then He will inform you of that which you used to do.

(2) Did the people of the towns then feel secure against the coming of Our punishment by night while they were asleep?

(3) And you would have thought them awake, whereas they were asleep. And We turned them on their right and on their left sides, and their dog stretching forth his two forelegs at the entrance [of the Cave or in the space near to the entrance of the Cave (as a guard at the gate)]. Had you looked at them, you would certainly have turned back from them in flight, and would certainly have been filled with awe of them.

(4) Then there passed by on the (garden) a visitation (fire) from your Lord at night and burnt it while they were asleep.