Surah Az-Zukhruf, Verse 66

هَلۡ يَنظُرُونَ إِلَّا ٱلسَّاعَةَ أَن تَأۡتِيَهُم بَغۡتَةٗ وَهُمۡ لَا يَشۡعُرُونَ٦٦

hal yanẓurūna illā l-sāʿata an tatiyahum baghtatan wahum lā yashʿurūna

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