Sura 26 Ash-Shu'ara' (The Poets), aya 201

1. لَا يُؤْمِنُونَ بِهِ حَتَّىٰ يَرَوُا الْعَذَابَ الْأَلِيمَ

   They will not believe in it until they see the painful punishment.

   26:201

Tafsiri: Saheeh International