Qur'an 22:1 · Al-Hajj

يَٰٓأَيُّهَا ٱلنَّاسُ ٱتَّقُوا۟ رَبَّكُمْ ۚ إِنَّ زَلْزَلَةَ ٱلسَّاعَةِ شَىْءٌ عَظِيمٌۭ

(1) O mankind, fear your Lord. Indeed, the convulsion of the [final] Hour is a terrible thing.