《旧五代史·后唐·列传二十六》
二月六日，中军到达武连，朝中使者带诏书到，告诉说西平王朱友谦有罪被处死，命李继岌杀掉他的儿子遂州节度使朱令德，康延孝大惊，接着董璋带兵到遂州，遇康延孝不进见，康延孝很愤怒，对各位军校说： 南边平定汴梁，西边平定巴邛，策划谋略是郭公做出的，但汗马之劳，力摧强敌，是我。
二月癸巳，中军次武连，中使诏至，谕以西平王硃友谦有罪伏诛，命继岌杀其子遂州节度使令德，延孝大惊。俄而董璋率兵之遂州，遇延孝不谒，延孝怒，谓诸校曰： 南平梁汴，西定巴邛，画策之谋，始于郭公，而汗马之劳，力摧强敌，即吾也。
On the sixth of the second lunar month, the central army reached Wulian when an imperial emissary arrived with an edict. The edict reported that King Xiping, Zhu Youqian, had been found guilty of a crime and had been executed, and that Li Jiji was ordered to kill the king’s son, the military commissioner of Suizhou, Zhu Lingde. Kang Yanxiao was greatly alarmed. Soon after, Dong Zhang led his troops to Suizhou. When they met, Kang Yanxiao did not pay his respects, and he was greatly angered. He said to his officers, “To the south, we pacified Bianliang. To the west, we pacified Ba and Qiong. The plans and strategies for each of these campaigns were made by Lord Guo. However, it was I who expended great effort, crushed our strong enemies, and emerged victorious.”