Surah Al-Hajj, Verse 55

وَلَا يَزَالُ ٱلَّذِينَ كَفَرُواْ فِي مِرۡيَةٖ مِّنۡهُ حَتَّىٰ تَأۡتِيَهُمُ ٱلسَّاعَةُ بَغۡتَةً أَوۡ يَأۡتِيَهُمۡ عَذَابُ يَوۡمٍ عَقِيمٍ٥٥

walā yazālu alladhīna kafarū fī mir'yatin min'hu ḥattā tatiyahumu l-sāʿatu baghtatan aw yatiyahum ʿadhābu yawmin ʿaqīmin

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.