《宋史·本纪·卷三》
南汉刘长在自己的国家里，喜好在酒中放毒药毒死臣下，不久归顺朝廷，跟着太祖来到讲武池，太祖倒了一杯酒赐给刘长，刘长环疑酒中有毒药，捧着杯子哭泣着说： 我犯的罪是在不赦之列的，陛下既然不以死罪对待我，我愿意做一名大宋的平民百姓，亲眼看看太平盛世，我不敢饮下这杯酒。 
南汉刘鋹在其国，好置酖以毒臣下。既归朝，从幸讲武池，帝酌卮酒赐鋹。鋹疑有毒，捧杯泣曰： 臣罪在不赦，陛下既待臣以不死，愿为大梁布衣，观太平之盛，未敢饮此酒。 
Liu Chang, the king of Southern Han, had the habit of poisoning his officials by putting poison in their wine. Soon after submitting to the court, he followed Taizu to the lecture hall at Jiangwu Lake, and Taizu offered him a cup of wine. Liu was filled with suspicion that the wine had been poisoned, and he held the cup and said, weeping: “My crimes are beyond forgiveness. Since Your Majesty is not going to have me put to death, I am willing to be a commoner in Great Song and witness this era of peace and prosperity myself. I do not dare to drink this cup of wine.”