Surah Al-Hajj, ayah 55

وَلَا يَزَالُ ٱلَّذِينَ كَفَرُواْ فِي مِرۡيَةٖ مِّنۡهُ حَتَّىٰ تَأۡتِيَهُمُ ٱلسَّاعَةُ بَغۡتَةً أَوۡ يَأۡتِيَهُمۡ عَذَابُ يَوۡمٍ عَقِيمٍ ٥٥

Walā yazālul-ladhīna kafarū fī miryatim minhu hattā ta'tiyahumus-sā'atu baghtatan aw ya'tiyahum 'adhābu yawmin 'aqīm

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.⁹³⁵