《北史·列传·卷八十七》
阿史那之后的叫作土门，部落稍稍强盛，就开始到塞上买卖缯絮，愿意和中国来往。
其后曰土门，部落稍盛，始至塞上市缯絮，愿通中国。
Asina's successor was called Tumen. The tribe gradually grew stronger and began to trade with China on the frontier, expressing a willingness to communicate with China.