《旧五代史·后晋·列传九》
庄宗没有马上答应他。他便在军门割下自己耳朵说 ：主帅处在危难之中，让我告请援救，如果不能请到援军，就是死又怎能回避。 庄宗认为他义气，准备率军渡河援救，突然听说城池已被攻破才作罢，因亲书诏令任刘处让为行台左骁卫将军，不久改任客省副使。
庄宗义之，将举兵渡河，俄闻城陷乃止。因以墨制授处让行台左骁卫将军，俄改客省副使。
Zhuangzong did not agree immediately. He then cut off his own ear at the military camp and said: “As long as the commander-in-chief is in danger, please let me ask for help. If I can't ask for reinforcement, I can't escape death.” Zhuangzong thought he was loyal and was ready to lead the army across the river to rescue him, but suddenly heard that the city had been conquered and then gave up. He then personally wrote an imperial edict to appoint Liu Churan as general of the left swift guard of the Xingtai military headquarters, and was soon changed to the deputy envoy of the guest house.