《北史·列传·卷七》
皇帝前往代都，进而到达长安。中尉李彪乘机秘密上奏表，报告说元恂又和身边人谋反。
帝幸代，遂如长安，中尉李彪承闲密表，告恂复与左右谋逆。
The Emperor went to the prefecture city of Dai and then to Chang'an. The Lieutenant-General Li Biao secretly presented a report, saying that Yuan Xun plotted to rebel again with the people around him.