Surah Az-Zukhruf, ayah 66

43:66

هَلۡ يَنظُرُونَ إِلَّا ٱلسَّاعَةَ أَن تَأۡتِيَهُم بَغۡتَةٗ وَهُمۡ لَا يَشۡعُرُونَ ٦٦

Hal yanzurūna illas-sā'ata an ta'tiyahum baghtatan wahum lā yash'urūn

Are they waiting except for the Hour to come upon them suddenly while they perceive not?