《韩非子·外储说右下》
因此这种说法可以借榔头、砧石用来整治不平，榜檠用来矫正不直的道理加以解释，不然的话，失败就会如同淖齿在齐国掌权而杀死齐闵王，李兑在齐国掌权而饿死主父。经五
是以说在椎锻平夷，榜檠矫直。不然，败在淖齿用齐戮闵王，李兑用赵饿主父也。
Therefore, this statement can be explained with the analogy of using hammer and anvil to correct unevenness, and using a ruler to correct crookedness; otherwise, failure will be like Nao Chi who killed King Min of Qi when he was in power in Qi, and Li Dui who starved Lord Fu to death when he was in power in Qi.