《后汉书·本纪·孝顺孝冲孝质帝纪》
十八日，开始命令郡国举荐孝廉，限年四十岁以上，诸生要通章句，文吏要能办笺奏，才能应选；有真才实学，有卓越的德行，像颜渊、子奇那样的人，就不拘年龄高低。
辛卯，初令郡国举孝廉，限年四十以上，诸生通章句，文吏能笺奏，乃得应选；其有茂才异行，若颜渊、子奇，不拘年齿。
On the eighteenth day, Jun and Guo began to recommend filial piety and integrity, with a maximum age of 40, scholars must understand the chapters and sentences, and scribes must be able to make memorials to be eligible for selection; those with real talent and learning and outstanding virtues, such as Yan Hui and Ziqi, are not restricted by age.