The word(s) "asleep" appears 3 time(s) in 3 verse(s) in Quran in Abdullah Yusuf Ali translation.

(1) Did the people of the towns feel secure against the coming of Our wrath by night while they were asleep?

(2) Thou wouldst have deemed them awake, whilst they were asleep, and We turned them on their right and on their left sides: their dog stretching forth his two fore-legs on the threshold: if thou hadst come up on to them, thou wouldst have certainly turned back from them in flight, and wouldst certainly have been filled with terror of them.

(3) Then there came on the (garden) a visitation from thy Lord, (which swept away) all around, while they were asleep.