يَومَ تَبيَضُّ وُجوهٌ وَتَسوَدُّ وُجوهٌ ۚ فَأَمَّا الَّذينَ اسوَدَّت وُجوهُهُم أَكَفَرتُم بَعدَ إيمانِكُم فَذوقُوا العَذابَ بِما كُنتُم تَكفُرونَ

On the Day [some] faces will turn white and [some] faces will turn black. As for those whose faces turn black, [to them it will be said], "Did you disbelieve after your belief? Then taste the punishment for what you used to reject."