《周书·列传·卷三十四》
杨摽屡次立有奇功，习惯于多次取胜，轻视敌人，毫无戒备，以致兵败身囚，未能作长远的考虑，真是值得嗟叹了。
杨摽屡有奇功，狃于数胜，轻敌无备，兵破身囚，未能远谋，良可嗟矣。
Yang Xu repeatedly achieved extraordinary feats and was used to winning many times; he despised his enemies and was completely unguarded, thus leading to defeat and imprisonment; he failed to think long-term and this was worthy of a sigh.