齊簡公有臣曰諸御鞅，諫簡公曰：「田常與宰予，此二人者甚相僧也，臣恐其相攻，相攻雖叛而危之，不可，願君去一人」。
簡公曰：「非細人之所敢議也。
」居無幾何，田常果攻宰予於庭，賊簡公於朝。
簡公喟然太息曰：「余不用鞅之言，以至此患也。
」故忠臣之言，不可不察也。
Lord Jian of Qi had an officer named Zhu Yu Yang92 who admonished him as follows: “There is deep hatred between Tian Chang and Zai Yu.