《太平广记·卷二百六十二·嗤鄙五》
胡县令也只是顺嘴答应了几句，等张巡官走后，他忽然想到：此人告别的时候说， 极是叨铁 ，出于哪篇文章？
胡唯唯而已。张去，胡忽思之曰：此人相别云： 极是叨铁 ，出何文谭？
The county magistrate would only give a few polite replies, and after Officer Zhang left, he suddenly thought: "When this person said goodbye, he said "it has been a great imposition," which article is that from?"