The nation among whom Hazrat Mahdi (as) serves

According to the information in the hadiths, Hazrat Mahdi (as) will work among the Turkish nation.

"HAZRAT MAHDI (AS) WILL NEVER LEAVE RUM, THE TURKS [because Turkey used to be known as region of Rum.]” (Narrated from Ish'afu'r-Ragibin by Tilsimlar, Bediuzzaman Said Nursi, p. 212)