Qur'an 32:17 · As-Sajda

فَلَا تَعْلَمُ نَفْسٌۭ مَّآ أُخْفِىَ لَهُم مِّن قُرَّةِ أَعْيُنٍۢ جَزَآءًۢ بِمَا كَانُوا۟ يَعْمَلُونَ

(17) 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.