《资治通鉴·梁纪·梁纪二十》
敕勒将要讨伐柔然国，突厥族酋长土门发兵截击，打败了敕勒，他属下的五万多部落全部降服。
铁勒将伐柔然，突厥酋长土门邀击，破之，尽降其众五万馀落。
The Chale were going to attack the Rouran, and the Turkic tribe leader Tumen sent his troops to intercept and defeat the Chale. More than 50,000 of his subordinate tribes surrendered.