﴿ بِسْمِ ٱللَّهِ ٱلرَّحْمَٰنِ ٱلرَّحِيمِ يَٰٓأَيُّهَا ٱلنَّاسُ ٱتَّقُوا۟ رَبَّكُمْ ۚ إِنَّ زَلْزَلَةَ ٱلسَّاعَةِ شَىْءٌ عَظِيمٌۭ ﴾

“O men! Be conscious of your Sustainer: for, verily the violent convulsion of the Last Hour will be an awesome thing!”

And from his narration on the authority of Ibn 'Abbas who said in explaining Allah's words (O mankind!): '(O mankind!) this expression could be of general applicability ('amm) as it could be of particular applicability (khass); here, it is an expression of general applicability. (Fear your Lord) and obey him. (Lo! the earthquake of the Hour (of Doom)) the advent of the Hour (is a tremendous thing) its horror is horrendous.