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

On the Day when some faces will brighten, and others will darken. To those whose faces have darkened: “Did you disbelieve after having faith? So taste the punishment for your disbelief.”