《旧唐书·本纪·卷十八》
时当李师道阻挡朝廷的用兵之势，王师前去问罪，三面张开了法网便使得全境的部众离心，到了这危急的时机，刘悟才得以归顺朝廷。
属师道阻兵，王师问罪，三面开纲，一境离心，乘此危机，遂能归命。
When Li Shidao obstructed the court's military force, the king's division went to punish him, the three-front layout of the law caused the defection of the partisans throughout the land, and it was during this time of danger that Liu Wu was able to submit to the court.