《资治通鉴·晋纪·晋纪九》
当时代郡属于幽州，王浚不同意，派兵打拓跋猗卢，拓跋猗卢抵御并打败王浚的军队，王浚因此对刘琨产生怨恨。
时代郡属幽州，王浚不许，遣兵击猗卢，猗卢拒破之。浚由是与琨有隙。
At that time, the Dai commandery belonged to the You Province. Wang Jun disagreed, and sent soldiers to attack Tuoba Yilu. Tuoba Yilu resisted and defeated Wang Jun's army, causing Wang Jun to become resentful towards Liu Kun.