The Book Pertaining to the Turmoil and Portents of the Last Hour (Kitab Al-Fitan wa Ashrat As-Sa`ah)

Muslim :: Book 41 : Hadith 6959

Abu Huraira reported Allah's Messenger (may peace be upon him) as saying: The Last Hour would not come until the Muslims fight with the Turks-a people whose faces would be like hammered shields wearing clothes of hair and walking (with shoes) of hair.

Source materials are from the University of Southern California MSA site
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