《魏书·列传·卷六十三》
进军到达太行山，大都督源子恭部下都督史忤龙开营降顺尔朱兆，子恭退军而走。
大都督源子恭下都督史仵龙开垒降兆，子恭退走。
As the army advanced to Taihang Mountain, General Shi Wulong under the command of Grand Supervisor Yuan Zigong surrendered to Erzhu Zhao, and Zigong retreated and fled.