《元史·列传·卷九》
太祖十四年，河中府归降，蒙古军北还，留按扎儿为前锋总帅，统所部兵马屯驻平阳以防御金兵，并代行国王事。
岁己卯，河中府降，兵北还，以按紥儿领前锋总帅，仍统所部兵屯平阳以备金，摄国王事。
In the fourteenth year of Taizu's reign, Hezhongfu surrendered, and the Mongol army returned north. Anzha was left behind as the Chief Commander of the Vanguard, and his troops were stationed in Pingyang to defend against the Jin soldiers. He also acted as the King.