《汉书·传·傅常郑甘陈段传》
竟宁年中，以杜陵令被五府举荐为西域都护、骑都尉光禄大夫，西域人敬重他的威望和信用。
竟宁中，以杜陵令五府举为西域都护、骑都尉、光禄大夫。西域敬其威信。
In the middle of the Jingning years, he was recommended by the Five Prefectures to be the Protectorate General of the Western Regions, Cavalry Commandant, and Grand Master of Ceremonies. The people of the Western Regions respected his authority and trustworthiness.