The Book of Tribulations and Portents of the Last Hour
وَحَدَّثَنِي حَرْمَلَةُ بْنُ يَحْيَى، أَخْبَرَنَا ابْنُ وَهْبٍ، أَخْبَرَنِي يُونُسُ، عَنِ ابْنِ شِهَابٍ، أَخْبَرَنِي سَعِيدُ بْنُ الْمُسَيَّبِ، أَنَّ أَبَا هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لاَ تَقُومُ السَّاعَةُ حَتَّى تُقَاتِلَكُمْ أُمَّةٌ يَنْتَعِلُونَ الشَّعَرَ وُجُوهُهُمْ مِثْلُ الْمَجَانِّ الْمُطْرَقَةِ " .Abu Huraira reported Allah's Messenger (ﷺ) as saying:The Last Hour would not come until a people wearing shoes of hair fight against you having their faces like hammered shields
From Sahih Muslim, whose reports the scholars accept as authentic.