And no soul knows what has been hidden for them of comfort for eyes [i.e., satisfaction] as reward for what they used to do.

     Their sides part [i.e., they arise] from [their] beds; they supplicate their Lord in fear and aspiration, and from what We have provided them, they spend. And no soul knows what has been hidden for them of comfort for eyes [i.e., satisfaction] as reward for what they used to do. 

THE QUR'AN as-Sajdah 32:16-17