《三国志·吴书·诸葛滕二孙濮阳传》
起初，诸葛恪将要出征淮南时，有位孝子穿着丧服走进内屋，随从的人禀报了这件事，诸葛恪命令孝子出来并审问他，孝子说： 不知不觉地就进来了。 
初，恪将征淮南，有孝子着缞衣入其阁中，从者白之，令外诘问，孝子曰： 不自觉入。 
At first, when Zhuge Ke was about to go on an expedition to Huainan, there was a filial son who put on mourning clothes and walked into the inner room. The entourage reported the incident, and Zhuge Ke ordered the filial son to come out and question him. . The filial son said: I came in without realizing it.