《资治通鉴·晋纪·晋纪十五》
代王拓跋郁律之子拓跋翳槐居住在舅父的贺兰部，拓跋纥那派使者要他，贺兰大人蔼头卫护着不让走。
代王郁律之子翳槐居于其舅贺兰部，纥那遣使求之，贺兰大人蔼头拥护不遣。
Dai King Tuoba Yulu’s son Tuoba Yihui lived in his maternal uncle’s Helan Tribe. Tuoba Henai sent messengers to ask for him, but Helan Lord Aitu protected him and would not let him go.