Chapter 39: Battles (Kitab Al-Malahim)
Abu hurairah reported the Prophet (ﷺ) as saying: The last hour will not come before you fight with a people whose sandals are of hair, and the Last hour will not come before you fight with a people who have small eyes, short noses, and whose faces look as if they were shields covered with skin.
Sunan Abi Dawud 4304