《资治通鉴·唐纪·唐纪三十》
春秋时代的子路为他的姐姐服丧，到期还不除去丧服，孔子说： 这是先王制定的礼仪，必须遵守，作为仁孝的人都是不忍心这样做的。 
昔子路有姊之丧而不除，孔子曰： 先王制礼，行道之人，皆不忍也。 
In the Spring and Autumn period, Zilu mourned for his elder sister, and when the mourning period was over, he did not remove the mourning clothes. Confucius said, "This is a ritual established by our former sovereigns, and it must be followed. Benevolent and filial people would not bear to do so." 