《太平广记·卷八·神仙八》
后来汉武帝听说左吴等五人随刘安去了仙界又被送了回来，就召见左吴等人，亲自问他们详细情况，左吴把详情说了，武帝非常懊丧悔恨，并说， 我要是像淮南王刘安那样能遇到神仙，我就会把皇室和天下看成一只鞋，脱掉也毫不可惜，然后毅然随神仙而去。 
武帝闻左吴等随王仙去更还，乃诏之，亲问其由。吴具以对。帝大懊恨，乃叹曰： 使朕得为淮南王者，视天下如脱屣耳。 
Later, when Emperor Wu of Han heard that Zuo Wu and the other five had gone to the immortal realm with Liu An and had been sent back, he summoned Zuo Wu and the others and personally asked them about the details. Zuo Wu told the details, and Emperor Wu was very disappointed and regretful, and said, "If I could meet an immortal like King Liu An of Huainan, I would consider the royal family and the world as a shoe, and it would not be a pity to take it off, and then resolutely follow the immortal to leave."