《宋史·列传·卷二百三十六》
有位朐山的于道士，已经老了，李全把他接来，于道士第一次见到李全就叹着气说 ：我的孽债就应该在这偿还吗？ 于道士占卜的事情常常得到应验，被李全尊奉为军师。
有朐山于道士者，老矣，全迎致之，初见全即叹曰： 我业债合在此亻赏耶？ 占事多验，尊为军师。
An old Taoist priest from Qushan named Yu was invited by Li Quan. When he first met Li Quan, he sighed and said: "Must I pay for my sins here?" The Taoist priest was often able to tell the future and Li Quan revered him as his military strategist.