《资治通鉴·晋纪·晋纪三十九》
刘裕写密信给司马休之府的录事参军、南阳人韩延之，招请他背叛司马休之，为自己效力。韩延之回信说： 承蒙你亲自统领军马，踏上遥远的西方疆域，荆州全境的士民庶人，没有不惊慌震骇的。
裕密书招休之府录事参军南阳韩延之，延之复书曰： 承亲帅戎马，远履西畿，阖境士庶，莫不惶骇。
Liu Yu secretly wrote a letter to Han Yan, a news reporter in Sima Xiu's government and a native of Nanyang, inviting him to betray Sima Xiu and work for himself. Han Yan replied: I am honored that you personally lead the army and set foot on the distant western border. All the civilians in Jingzhou are in shock and panic.