《汉书·传·匈奴传下》
更始二年冬天，汉朝派中郎将归德侯飒、大司马护军陈遵出使匈奴，授给单于汉朝原来式样的玺绶，授给王侯以下的人印绶，同时把跟从云和须当来中原的、没死而剩下的亲属、全送回匈奴。
更始二年冬，汉遗中郎将归德侯飒、大司马护军陈遵使匈奴，授单于汉旧制玺绶，王侯以下印绶，因送云、当余亲属贵人从者。
In the winter of the second year of Geng Shi, the Han court dispatched the Central Committee General, the Marquis of Gui De, Sa, and the Grand Minister of the Protectorate, Chen Zun, to serve as envoys to the Xiongnu, bestowing the seal and ribbon to the Chanyu in the style of the Han court, the seal and ribbon to the kings and nobles below him, and also sending back to the Xiongnu those relatives who had followed Yun and Wu Dang to the Central Plains and had survived but still remained in the Central Plains.