《魏书·列传·卷四十七》
于是吕伯度背着胡琛，袭击胡琛的将领刘拔，打败击退刘拔，派其兄子吕忻和率领人马东引国军。
伯度乃背胡琛，袭琛将刘拔，破走之，遣其兄子忻和率骑东引国军。
So Lü Bodu turned against Hu Chen, and attacked his general Liu Ba, defeating and repulsing him, and sent his elder nephew Lü Xin and to lead troops to attract the national army from the east.