《宋史·列传·卷九十四》
暗中派副将曲充径直出横岭，扬言援兵来到，敌人正惊骇回头看，杨可世偷偷地把军队驻扎在西夏军队的后面，姚平仲以精兵从中间进击，敌人大溃，斩首五十级，获得骆驼、马牛万计，其酋长仅以身免。
阴遣偏将曲克径出横岭，扬言援兵至，敌方骇顾，杨可世潜军军其后，姚平仲以精甲衷击之，敌大溃，斩首五十级，获橐驼、马牛万计，其酋仅以身免。
Secretly dispatched Deputy Commander Qu Chong to go straight out of Hengling and made a false claim that reinforcements had arrived. As the enemy was shocked and looked back, Yang Keshi secretly led his troops to station behind Xia's army. Yao Pingzhong led elite soldiers to attack from the middle. The enemy was badly defeated, with fifty men's heads cut off. Tens of thousands of camels, horses, and cattle were seized, and their chief barely escaped with his life.