《魏书·帝纪·卷九》
肃宗下诏让临淮王元为镇军将军，假镇北将军，都督北征诸军事率兵讨伐。
诏临淮王彧为镇军将军，假征北将军，都督北征诸军事以讨之。
Emperor Suzong issued an imperial edict ordering Yuan Yi, King of Linhuai, to act as General of the Defending Army, acting General of the Auxiliary Northern Army, and Governor-general of Northern Expeditionary Forces to lead troops to suppress the rebellion.