《周书·本纪·卷四》
哀悼死者事奉生者，这是人臣的大节，你们要思念这句话，让万代人称颂。
哀死事生，人臣大节，公等思念此言，令万代称叹。
Mourn for the dead and serve the living, this is the greatest cause for a subject. You should bear this sentence in mind and let future generations praise you.