الحج — Al-Hajj Ayat 55
وَلَا يَزَالُ الَّذِيْنَ كَفَرُوْا فِيْ مِرْيَةٍ مِّنْهُ حَتّٰى تَأْتِيَهُمُ السَّاعَةُ بَغْتَةً اَوْ يَأْتِيَهُمْ عَذَابُ يَوْمٍ عَقِيْمٍ
Wa lā yazālul-lażīna kafarū fī miryatim minhu ḥattā ta'tiyahumus-sā‘atu bagtatan au ya'tiyahum ‘ażābu yaumin ‘aqīm(in).
"But those who disbelieve will not cease to be in doubt of it until the Hour comes upon them unexpectedly or there comes to them the punishment of a barren Day."