《三国志·蜀书·董刘马陈董吕传》
诸葛亮上书说： 侍中郭攸之、费祎、侍郎董允等人，是先帝选拔出来留给陛下的，至于斟酌损益，劝谏忠正之言就是他们的职责。
上疏曰： 侍中郭攸之、费祎、侍郎董允等，先帝简拔以遗陛下，至於斟酌规益，进尽忠言，则其任也。
Zhuge Liang memorialized to the emperor, saying: "Attendant Guo Youzhi, Fei Yi, and Gentleman of the Bed Chamber Dong Yun were selected by the late emperor and left to Your Majesty. As for weighing the pros and cons and offering loyal and honest advice, that is their duty.