From Sahih Bukhari (Hadith 3590):
Narrated Abu Huraira:The Prophet (ﷺ) said, "The Hour will not be established till you fight with the Khudh and the Kirman from among the non-Arabs. They will be of red faces, flat noses and small eyes; their faces will look like flat shields, and their shoes will be of hair
Reference: Bukhari 3590