《汉书·传·匈奴传上》
汉朝又派因杆将军公孙敖出西河郡，与强弩都尉路博德在涿邪山会合，没有得到什么。
汉又使因杅将军出西河，与强弩都尉会涿邪山，亡所得。
The Han Dynasty also sent Yinggan General Gongsun Ao to Xihe County to rendezvous with Jiangnu Duwei Lubode at Zhuoxie Mountain, but nothing was gained.