《资治通鉴·宋纪·宋纪二》
于是，徐羡之等便利用刘义真与刘义符之间早已存在的宿怨，先上疏弹劾刘义真的种种罪行，将刘义真贬为平民，放逐到新安郡。前吉阳县令堂邑人张约之上疏说： 庐陵王从小就得到先帝优厚慈爱的待遇，长大后又受到陛下和睦友爱的恩宠，所以心里有什么话，一定要说出来，内心想什么，一定会不加掩饰地表现出来。
前吉阳令堂邑张约之上疏曰： 庐陵王少蒙先皇优慈之遇，长受陛下睦受之恩，故在心必言，所怀必亮，容犯臣子之道，致招骄瓷之愆。
Hence, Xu Xianzhi and others exploited the existing grudge between Liu Yizhen and Liu Yifu, and first submitted a memorial to impeach Liu Yizhen's various crimes, demoting him to a commoner and banishing him to Xin'an County. The former magistrate of Jiyang County and a native of Tangye, Zhang Yue, said in his memorial: "Prince Luling received the rich, loving treatment of the former emperor from a young age, and grew up in the harmonious and loving care of Your Majesty, so whatever he has to say, he will say, and whatever he thinks, he will not hide.