《后汉书·本纪·孝安帝纪》
现命令三公、特进、侯、中二千石、二千石、郡守、诸侯相举贤良方正、有道术、通达政治教化、能直言极谏之士各一人，以及最有孝道与众不同的，送到公车，我将亲自接待听取意。 
其令三公、特进、侯、中二千石、二千石、郡守、诸侯相举贤良方正、不道术、达于政化、能直言极谏之士各一人，及至孝与众卓异者，并遣诣公车，朕将亲览焉。
I now command the Three Excellencies, Special Attendants, marquesses, mid-level officials of 2,000 bushels, officials of 2,000 bushels, regional governors, and vassal state officials to each recommend one worthy, upright, learned, and eloquent man who is capable of speaking truth to power, as well as the most filial, who are rare. Send them to the Imperial Chariot. I will personally receive and consult with them.