《资治通鉴·汉纪·汉纪二十四》
成帝诏问太子因何叩谢的情况后，尚书上奏弹劾赵玄，赵玄被贬降为少府，而任命光禄勋师丹为太傅。
诏问所以谢状，尚书劾奏玄，左迁少府；以光禄勋师丹为太傅。
After Emperor Cheng issued an edict asking why the Crown Prince had expressed gratitude, the Bureau of Imperial Scribes submitted a memorial impeaching Zhao Xuan; Zhao Xuan was demoted to Junior Clerk of the Palace Revenue Treasury, and Teacher Dan, the Chamberlain of the Gentlemen of the Palace, was appointed as Grand Tutor.