Ash-Shu'ara 26:201
لَا يُؤْمِنُونَ بِهِۦ حَتَّىٰ يَرَوُا۟ ٱلْعَذَابَ ٱلْأَلِيمَ
La yu/minoona bihi hattayarawoo alAAathaba al-aleem
They will not believe in it until they see the painful punishment.
They will not believe in it until they will see the painful punishment