《新唐书·列传·卷九十七》
御史弹劾他，皇帝下诏流放康州。他不立即上路，暗中向河北三处藩镇求援。
御史劾之，有诏流康州，不即行，阴求援于河北三镇。
The imperial censor impeached him, and the emperor issued an edict banishing him to Kangzhou. Instead of leaving immediately, he secretly sought help from the three藩镇藩镇in Hebei.