26:189
فَكَذَّبُوهُ فَاَخَذَهُمْ عَذَابُ یَوْمِ الظُّلَّةِؕ اِنَّهُ كَانَ عَذَابَ یَوْمٍ عَظٖیمٍ
Fakaththaboohu faakhathahum AAathabu yawmi alththullati innahu kana AAathaba yawmin AAatheemin
Translations
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
But they denied him, so there came on them the retribution of the day of gloom. Lo! it was the retribution of an awful day
Marmaduke Pickthall