折疑論 4.73

4.73

夫三桓之與三王（以此比之。史記。三桓者孟孫季孫叔孫也。皆桓公之後也。三王者夏商周三代聖君也。以王喬簫史喻三桓。摩騰竺法喻三王也）。

Now, consider the Three Huan families compared to the Three Kings (comparing them like this. Shiji: the Three Huan were Mengsun, Jisun, and Shusun; all were descendants of Duke Huan. The Three Kings were the sage rulers of the three dynasties: Xia, Shang, and Zhou. Wang Qiao and Xiao Shi are compared to the Three Huan; Moteng and Zhu Falan are compared to the Three Kings).