《资治通鉴·唐纪·唐纪三十二》
棣王李琰有两个孺人，争风吃醋，其中一个暗中让巫师写了一道符放在李琰的鞋子里，借以讨好。
棣王琰有二孺人，争宠，其一使巫书符置琰履中以求媚。
King Li Yan of Di had two wives, who were jealous of each other, One of them secretly asked a wizard to write a talisman and put it in Li Yan's shoes to please him.