《三国志·魏书·满田牵郭传》
田豫登上城门对王门说： 公孙瓒对你不薄，可你还是弃他而去。也许你是迫不得已，但现在你却为虎作伥，才知你是一个乱臣贼子。
豫登城谓门曰： 卿为公孙所厚而去，意有所不得已也；今还作贼，乃知卿乱人耳。
Tian Yu climbed up to the top of the city gate and addressed Wangmen, saying, “Gongsun Zan has shown you nothing but kindness, yet you’ve betrayed him. Even if you had no choice in the matter, you’re still playing the role of a treacherous subject by fighting for Yuan Shao.