《资治通鉴·汉纪·汉纪八》
有人在朝廷上诋毁直不疑，说他与嫂子私通。直不疑听到了，就说： 我并没有哥哥。 
人或廷毁不疑，以为盗嫂，不疑闻，曰： 我乃无兄。 
Someone in imperial court slandered Zhi Buyis, saying that he was committing adultery with his sister-in-law. Zhi Buyis heard that, and said: I don’t have any elder brother.