《资治通鉴·汉纪·汉纪三十九》
窦宪分别派遣副校窦宪、耿秉出塞三千余里，登上燕然山，命令中护军班固刻石建立功碑，记录汉朝的国威和恩德，然后班师。
宪、秉出塞三千馀里，登燕然山，命中护军班固刻石勒功，纪汉威德而还。
Dou Xian sent deputy school captain Dou Xian and Geng Bing out of the border for more than three thousand miles, climbed the Yanran Mountain, and ordered the central guard Ban Gu to engrave a monument to record the majesty and favor of the Han Dynasty. 