"No soul knows what has been hidden for them of coolness for eyes, as a reward for what they used to do," meaning: according to the measure of their deeds.
Surah as-Sajdah, from (verse 18 to verse 20).
﴿فَلا تَعْلَمُ نَفْسٌ مَا أُخْفِيَ لَهُمْ مِنْ قُرَّةِ أَعْيُنٍ جَزَاءً بِمَا كَانُوا يعْملُونَ﴾ على قدر أَعْمَالهم.
سُورَة السَّجْدَة من (آيَة ١٨ آيَة ٢٠).
