Surah Muhammad, Verse 18

فَهَلۡ يَنظُرُونَ إِلَّا ٱلسَّاعَةَ أَن تَأۡتِيَهُم بَغۡتَةٗۖ فَقَدۡ جَآءَ أَشۡرَاطُهَاۚ فَأَنَّىٰ لَهُمۡ إِذَا جَآءَتۡهُمۡ ذِكۡرَىٰهُمۡ١٨

fahal yanẓurūna illā l-sāʿata an tatiyahum baghtatan faqad jāa ashrāṭuhā fa-annā lahum idhā jāathum dhik'rāhum

Then do they await except that the Hour should come upon them unexpectedly? But already there have come [some of] its indications. Then how [i.e., what good] to them, when it has come, will be their remembrance?