كَذَّبَتْ عَادٌ فَكَيْفَ كَانَ عَذَابِي وَنُذُرِ
[54:18]
Ad treated (the truth) as a lie, so how (great) was My punishment and My warning!
The 'Ad (people) (too) rejected (Truth): then how terrible was My Penalty and My Warning?
(The tribe of) A'ad rejected warnings. Then how (dreadful) was My punishment after My warnings.