فَكَذَّبُوهُ فَأَخَذَهُمۡ عَذَابُ يَوۡمِ ٱلظُّلَّةِۚ إِنَّهُۥ كَانَ عَذَابَ يَوۡمٍ عَظِيمٍ
Fakazzaboohu fa akhazahum 'azaabu Yawmiz zullah; innahoo kaana 'azaaba Yawmin 'Azeem
English Translation
And they denied him, so the punishment of the day of the black cloud seized them. Indeed, it was the punishment of a terrible day
— Saheeh International