《后汉书·本纪·孝顺孝冲孝质帝纪》
二十日，尚书奏请责令管事人，收还延光三年九月初七日，废皇太子刘保为济阴王的诏书。
登卯，尚书奏请下有司，收还延光三年九月丁酉以皇太子为济阴王诏书。
On the twentieth day, the Imperial Secretariat pleaded to be ordered in charge of reclaiming the edict of September 7th in the third year of Yan Guang, which dethroned the Crown Prince Liu Bao and made him the King of Jiyin.