Sahih al-Bukhari 3592
صحيح البخاري#3592SahihNarrated `Umar bin Taghlib:I heard Allah's Messenger (ﷺ) saying, "Near the Hour you will fight with people who will wear hairy shoes; and you will also fight people with flat faces like shields
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 61:99