يَوْمَ تَبْيَضُّ وُجُوهٌ وَتَسْوَدُّ وُجُوهٌ ۚ فَأَمَّا ٱلَّذِينَ ٱسْوَدَّتْ وُجُوهُهُمْ أَكَفَرْتُم بَعْدَ إِيمَـٰنِكُمْ فَذُوقُوا۟ ٱلْعَذَابَ بِمَا كُنتُمْ تَكْفُرُونَ
Yawma tabyaddu wujoohunw wa taswaddu wujooh; faammal lazeenas waddat wujoohum akafartum ba'da eemaanikum fazooqul 'azaaba bimaa kuntum takfuroon
W dniu, kiedy jedne twarze pojaśnieją, a inne pociemnieją. A jeśli chodzi o tych, których twarze pociemniały: "Czy wy staliście się niewiernymi, choć przedtem uwierzyliście? Zakosztujcie więc kary za to, iż nie wierzyliście!"
On the day when some faces will be bright and some faces will be dark — as for those whose faces are darkened: did you deny after your belief? Then taste the punishment for the denial you held to.
Arabic already used a whitened face for vindication and a blackened one for disgrace, the idiom behind the man in Surah An-Nahl whose face darkens at news of a daughter, so the image carries public standing before it carries colour. Whether that day makes the idiom literal or keeps it figurative is a question the commentaries leave open. The verse also lands directly after the warning against splitting into factions.