Sahih al-Bukhari, Book 56, Hadith 140 (In-Book) ⓘ
Narrated `Amr bin Taghlib: The Prophet said, "One of the portents of the Hour is that you will fight with people wearing shoes made of hair; and one of the portents of the Hour is that you will fight with broad-faced people whose faces will look like shields coated with leather."
حَدَّثَنَا أَبُو النُّعْمَانِ، حَدَّثَنَا جَرِيرُ بْنُ حَازِمٍ، قَالَ سَمِعْتُ الْحَسَنَ، يَقُولُ حَدَّثَنَا عَمْرُو بْنُ تَغْلِبَ، قَالَ قَالَ النَّبِيُّ صلى الله عليه وسلم " إِنَّ مِنْ أَشْرَاطِ السَّاعَةِ أَنْ تُقَاتِلُوا قَوْمًا يَنْتَعِلُونَ نِعَالَ الشَّعَرِ، وَإِنَّ مِنْ أَشْرَاطِ السَّاعَةِ أَنْ تُقَاتِلُوا قَوْمًا عِرَاضَ الْوُجُوهِ، كَأَنَّ وُجُوهَهُمُ الْمَجَانُّ الْمُطَرَّقَةُ " .
also referenced under: Hadith 2927 (DarusSalam) & Volume 4, Book 52, Hadith 178 (USC-MSA)