فَكَذَّبُوْهُ فَاَخَذَهُمْ عَذَابُ يَوْمِ الظُّلَّةِؕ اِنَّهٗ كَانَ عَذَابَ يَوْمٍ عَظِيْمٍ ١٨٩
Translation
So they impugned him, and then they were overtaken by the punishment of the day of the overshadowing cloud. It was indeed the punishment of a terrible day.