《资治通鉴·晋纪·晋纪二十七》
慕容泓的兵众达到十多万，他派遣使者告诉前秦王苻坚说： 吴王慕容垂已经平定了关东，可以迅束就此准备车驾，奉送家兄慕容皇帝，慕容泓要率领关中的燕国人守卫车乘，返回邺都，与秦国以虎牢为界，永远结为友邻。 
泓众至十馀万，遣使谓秦王坚曰： 吴王已定关东，可速资备大驾，奉送家兄皇帝，泓当帅关中燕人翼卫乘舆，还返鄴都，与秦以虎牢为界，永为邻好。 
Murong Hong's soldiers reached more than 100,000. He sent messengers to tell Fu Jian, King of the Former Qin Dynasty: King Wu Murong Chui has already pacified Guandong, can quickly prepare the chariot and welcome his elder brother Emperor Murong, Murong Hong wants to lead the Yan people in Guanzhong to defend the chariot, return to Yecheng, and form a permanent friendship with Qin Guoyi Hulao as the boundary.