Battle of Kharistan

The Battle of Kharistan was fought between the forces of the Umayyad Caliphate and the Turkic Turgesh in December 737 near the town of Kharistan in Juzjan, eastern Khurasan (modern northern Afghanistan). The Umayyads under the governor of Khurasan, Asad ibn Abdallah al-Qasri, managed to surprise and defeat the Turgesh khagan, Suluk, and his ally the Arab renegade al-Harith ibn Surayj, thereby forestalling the collapse of Arab rule over Khurasan.

• http://en.wikipedia.org/wiki/Battle of Kharistan