《魏书·列传·卷十二》
当初，道固在客栈，和薛安都、毕众敬房舍相邻，其时以朝廷集会而相见，三人本是同由武艺而显达，结为同僚旧交，这时安都志向已经衰退，对道固的情意就疏略了，而众敬每每竭尽殷勤。
初，道固之在客邸，与薛安都、毕众敬邻馆，时以朝集相见，本既同由武达，颇结僚旧。时安都志已衰朽，于道固情乃疏略，而众敬每尽殷勤。
In the beginning, Dao Gu lived in an inn next to Xue Andu and Bi Zhongjingfang. At that time, they met at a gathering of the imperial court. These three people originally rose to prominence through their martial arts, and they became close colleagues. However, by that time, Andu's ambitions had already declined, so he had less regard for Dao Gu, while Zhongjing was always extremely attentive.