《魏书·列传·卷六十二》
当时敌帅万俟丑奴、萧宝夤拥兵幽、泾二州，气势汹汹，日甚一日。
时贼帅万俟丑奴、萧宝夤拥众豳泾，凶势日盛。
At that time, enemy commanders Wanqi Chounu and Xiao Baoin were holding the two provinces of You and Jing with their armies. Their aggressive momentum grew stronger day by day.