55وَلا يَزالُ الَّذينَ كَفَروا في مِريَةٍ مِنهُ حَتّىٰ تَأتِيَهُمُ السّاعَةُ بَغتَةً أَو يَأتِيَهُم عَذابُ يَومٍ عَقيمٍ(Saheeh International)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.1 One which will not be followed by night and therefore will not give birth to a new day, referring to the Day of Resurrection.