《汉书·志·五行志中之上》
刘贺向郎中令龚遂询问，龚遂说： 这是天帝的告诫，告诉您，在您身边的那些人都是不识礼的小人，就像戴冠的狗一样。
贺以问郎中令龚遂，遂曰： 此天戒，言在仄者尽冠狗也。
Liu He asked the Grand Minister of State Affairs Gong Sui, who replied, “This is a warning from the Emperor of Heaven, telling you that the people by your side are rude and ignorant, just like the dog wearing the crown.