《汉书·传·楚元王传》
哀帝刚即位，大司马王莽推举刘歆是有才德的宗室，做诗中太中大夫，升骑都尉、奉车光禄大夫，地位尊贵深受宠幸。
哀帝初即位，大司马王莽举歆宗室有材行，为侍中太中大夫，迁骑都尉、奉车光禄大夫，贵幸。
When Emperor Ai had just ascended to the throne, Grand Marshal Wang Mang recommended Liu Xin, a talented and virtuous imperial family member, who was appointed as a doctor of Zhongtai, promoted to be a Riding Chief Commandant, and a Grand Minister of the Imperial Guard, with high status and enjoyed ample favor.