《汉书·传·楚元王传》
思绪不已，又上书道：臣听说帝舜告诫伯禹，不要像丹朱那样傲慢；周公告诫成王，不要像殷王纣那样。
怀不能已，复上奏，其辞曰：臣闻帝舜戒伯禹，毋若丹朱敖；周公戒成王，毋若殷王纣。
He thought it over and over again and wrote another memorial, saying, "I heard that Emperor Shun warned Boyu not to be arrogant like Danzhu; the Duke of Zhou warned King Cheng not to be like King Zhou of Yin."