The word(s) "sleep" appears 16 time(s) in 15 verse(s) in Quran in Mohsin Khan translation.

(11) It is Allah Who takes away the souls at the time of their death, and those that die not during their sleep. He keeps those (souls) for which He has ordained death and sends the rest for a term appointed. Verily, in this are signs for a people who think deeply.

(12) They used to sleep but little by night [invoking their Lord (Allah) and praying, with fear and hope].

(13) So wait patiently (O Muhammad صلى الله عليه وسلم) for the Decision of your Lord, for verily, you are under Our Eyes ; and glorify the Praises of your Lord when you get up from sleep.

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

(15) And We have made your sleep as a thing for rest.