Verse 39

وَٱلَّذِينَ كَفَرُوٓا۟ أَعْمَـٰلُهُمْ كَسَرَابٍۭ بِقِيعَةٍ يَحْسَبُهُ ٱلظَّمْـَٔانُ مَآءً حَتَّىٰٓ إِذَا جَآءَهُۥ لَمْ يَجِدْهُ شَيْـًٔا وَوَجَدَ ٱللَّهَ عِندَهُۥ فَوَفَّىٰهُ حِسَابَهُۥ وَٱللَّهُ سَرِيعُ ٱلْحِسَابِ

As for the unfaithful, their deeds are like a mirage on a flat plain that the thirsty thinks is water, until he reaches it and finds nothing, but he finds God there, He then fully repays him his reckoning. And God is quick in reckoning.