Early exegetical ethnography:
Muqātil ibn Sulaymān, a 2nd/8th-century exegete, quotes ʿAlī ibn Abī Ṭālib as saying:
The Turks are a raiding party of Gog and Magog that set out to plunder people, but Dhū l-Qarnayn built the wall to keep [God and Magog] out, so they remained...