《资治通鉴·汉纪·汉纪三十八》
阜陵王刘延屡屡心怀不满，有人告发他与儿子刘鲂密谋造反。章帝不忍将刘延处死，冬季十一月，将他贬为阜陵侯，只享有一个县的封地，不许他与官员人民来往。
阜陵王延数怀怨望，有告延与子男鲂造逆谋者；上不忍诛，冬十一月，贬延为阜陵侯，食一县，不得与吏民通。
King Liu Yan of Fuling was repeatedly disgruntled, and someone accused him of conspiring to rebel with his son Liu Qi. Emperor Zhang couldn't bear to execute Liu Yan, and in the winter, in the eleventh month, he demoted him to Lord of Fuling, and only let him control one county, and did not allow him to contact officials or the people.