麻赫穆德·喀什噶里
Muslim Turkic scholar Mahmud al-Kashgari, around the year 1075, whom he considered Tengrists as "infidel", offered this view: "The infidels — may God destroy them! — call the sky Tengri, also anything that is imposing in their eyes call Tengri, such as a great mountain or tree, and they bow down to such things."