Ash-Shu'ara 26:201

Meccan · The Poets

لَا يُؤْمِنُونَ بِهِۦ حَتَّىٰ يَرَوُا۟ ٱلْعَذَابَ ٱلْأَلِيمَ

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