وَلَا يَزَالُ الَّذِينَ كَفَرُوا فِي مِرْيَةٍ مِّنْهُ حَتَّى تَأْتِيَهُمُ السَّاعَةُ بَغْتَةً أَوْ يَأْتِيَهُمْ عَذَابُ يَوْمٍ عَقِيمٍ
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سورة الحج
(22/55) And those who disbelieve shall not cease to be in doubt about it until the Hour comes suddenly upon them, or there comes to them the torment of the day whose goal cannot be attained (of the day of death).
Surah Al-Hajj