《宋史·列传·卷七十九》
英宗身体有病，皇太后听政，用辅佐大臣的身份说： 先帝既已立皇子，我更加迷惑，而且知名的亲信大臣也是这样，差点坏了大事，最近已经焚毁这个奏章了。 不久外面的人就说蔡襄有议论，皇帝听说后怀疑他。
英宗不豫，皇太后听政，为辅臣言： 先帝既立皇子，宦妾更加荧惑，而近臣知名者亦然，几败大事，近已焚其章矣。 已而外人遂云襄有论议，帝闻而疑之。
Emperor Yingzong was physically ill, and the empress dowager took charge of the government and, as minister of the imperial household, said: "The late emperor had already established the crown prince. I have just grown more confused, and so have the respected ministers close to me. It nearly caused a terrible situation. Recently that memorial has been destroyed by fire." Soon, rumors spread that Cai Xiang had spoken out of turn, and so the emperor suspected him.