《资治通鉴·宋纪·宋纪五》
北魏国主拓跋焘因为谷浑可汗的哥哥慕容慕有生擒并呈献赫连定的功劳，因此派使臣招抚逃走的吐谷浑可汗慕容慕利延，慕容慕利延才率部众返回故地。
魏主以其兄慕璝有擒赫连定之功，遣使抚谕之，慕利延乃还故地。
Crown Prince of Northern Wei, Tuoba Táo, sent envoys to coax the fledding Tuyuhun Khan Murong Muliyan back to his homeland, as Murong Mu's elder brother Murong Mu had captured and given up Helan Ding to the crown. Murong Muliyan then led his followers back to their former location.