《史记·十二本纪·五帝本纪》
舜对四岳说： 有谁能奋发努力，建立功业，光大帝尧的事业，授给他官职辅佐我办事呢？ 
舜谓四岳曰： 有能奋庸美尧之事者，使居官相事？ 
Shun said to the Four Mountains, “Who can rise to the challenge, accomplish great things, carry forward the great cause of Emperor Yao, and be appointed to an official position to assist me in my work?”