Quran 22:55 from Surah Al-Hajj on Divine Marvels.
وَلَا يَزَالُ ٱلَّذِينَ كَفَرُواْ فِي مِرۡيَةٖ مِّنۡهُ حَتَّىٰ تَأۡتِيَهُمُ ٱلسَّاعَةُ بَغۡتَةً أَوۡ يَأۡتِيَهُمۡ عَذَابُ يَوۡمٍ عَقِيمٍ
English translation: And not will cease those who disbelieve (to be) in doubt of it until comes to them the Hour suddenly or comes to them (the) punishment (of) a Day barren
Transliteration: wala yazalu alladhina kafaru fi mir'yatin min'hu hatta tatiyahumu al-sa'atu baghtatan aw yatiyahum adhabu yawmin aqimin