《资治通鉴·唐纪·唐纪六十三》
当初，河东节度使刘沔击败回鹘乌介可汗，接回太和公主，幽州节度使张仲武忌妒刘沔的功劳，由此二人产生矛盾。武宗派李回赴幽州进行调解，但张仲武仍然很不服气。
初，刘沔破回鹘，得太和公主，张仲武疾之，由是有隙；上使李回至幽州和解之，仲武意终不平。
At first, Liu Mian, the Jiedushi of Hedong, defeated Uighur Wu Jie Khan and took back Princess Taihe. Zhang Zhongwu, the Jiedushi of Youzhou, envied Liu Mian's merit, leading to a conflict between them. Emperor Wuzong sent Li Hui to Youzhou to mediate, but Zhang Zhongwu was still displeased.