《新唐书·列传·卷一百四十九》
仆固怀恩列阵西原，大张旗鼓，派突击骑兵与回纥兵从南边出绕到贼营左边，举旗为号，猛击贼营，攻破贼人工事，杀死好几万人。
怀恩阵西原，多张旗■，使突骑与回纥稍南出缭贼左，举旗为应，破贼壁，死者数万。
Pugu Huai'en lined up his troops on the west plain and made a great show of force. He sent cavalry and Huihe soldiers to go around to the left side of the rebel camp from the south. They raised their flags as a signal and attacked the rebel camp fiercely. They broke through the rebels' defenses and killed tens of thousands of them.