Sura 54 Al-Qamar (The Moon), ayah 46

1. بَلِ السَّاعَةُ مَوْعِدُهُمْ وَالسَّاعَةُ أَدْهَىٰ وَأَمَرُّ

   But the Hour is their appointment (for due punishment), and the Hour is more disastrous and more bitter.

   54:46

Translation: Saheeh International