《周书·列传·卷四十五》
五年，诏令鲁公宇文卖、毕公宇文贤等人，俱以束脩之礼，受业为弟子。
五年，诏鲁公赟、毕公贤等，俱以束修之礼，同受业焉。
In the fifth year, an imperial order commanded Duke Lu Yuwen Mai and Duke Bi Yuwen Xian to accept him as their disciple with the ritual of束脩.