39لَو يَعلَمُ الَّذينَ كَفَروا حينَ لا يَكُفّونَ عَن وُجوهِهِمُ النّارَ وَلا عَن ظُهورِهِم وَلا هُم يُنصَرونَTaqi UsmaniOnly if the disbelievers were to know the time when they will not (be able to) keep off the fire from their faces or from their backs, nor will they be helped.