Al-Muddaththir 74:26

ثُمَّ أَدْبَرَ وَاسْتَكْبَرَ

Then he turned back and was arrogant

فَقَالَ إِنْ هَـٰذَا إِلَّا سِحْرٌ يُؤْثَرُ

And said, "This is not but magic imitated [from others].

إِنْ هَـٰذَا إِلَّا قَوْلُ الْبَشَرِ

This is not but the word of a human being."

وَمَا أَدْرَاكَ مَا سَقَرُ

And what can make you know what is Saqar?

لَا تُبْقِي وَلَا تَذَرُ

It lets nothing remain and leaves nothing [unburned],

لَوَّاحَةٌ لِّلْبَشَرِ

Blackening the skins.