فَكَذَّبُوهُ فَأَخَذَهُمۡ عَذَابُ يَوۡمِ ٱلظُّلَّةِ ۚ إِنَّهُۥ كَانَ عَذَابَ يَوۡمٍ عَظِيمٍ
But they rejected him. Then the punishment of a day of overshadowing gloom seized them, and that was the Penalty of a Great Day.<br/>
But they denied him, so they were seized by the chastisement of the day of the shade (al-zulla) - a cloud which gave them shade when they suffered a bout of extreme heat but which then rained down fire on them and they were incinerated. Assuredly it was the chastisement of a tremendous day.