《太平广记·卷一百零一·释证三》
元戎就立刻派人到府南三十里去访查，果然找到了相国寺的古墓。在墓殿台阶前面挖掘，找到了铁塔。上面刻了三千人的姓名，都是在常山将校亲军中的人，唯独没有任友义的名字。才知道是前世所定。
遽差于府南三十里访之，果得相国寺古墓，掘其殿砌之前，得铁塔，上刻三千人姓名，悉是见在常山将校亲军，唯任友义一人无名，乃知冥数前定。
Yuan Rong sent someone to search the area thirty li to the south of the prefectural seat, and sure enough, they found the ancient tomb of Xiangguo Temple. They dug into the ground in front of the steps of the tomb chamber and found the iron pagoda. The names of three thousand people were carved on it. They were all officers in the personal guards of Changshan, but Ren Youyi's name was not among them. Now they knew that it had been determined in a previous life.