《魏书·列传·卷十二》
将到不其，听说道固已失败，母亲弟弟进入魏国，逗留不进。
将至不其，闻道固已败，母弟入国，徘徊不进。
When they arrived at Buqi, they heard that Daogu had failed, and his mother and younger brother had entered the state of Wei, so they stayed and didn't go any further.