《资治通鉴·唐纪·唐纪六十五》
有一天，邓州刺史薛弘宗入宫向唐宣宗拜谢后出朝，对韦澳说： 皇上对邓州的事务了如指掌，处置和分析令人惊讶。 
他日，邓州刺史薛弘宗入谢，出，谓澳曰： 上处分本州事惊人。 
One day, after Dengzhou Governor Xue Hongzong entered the palace to express his gratitude to Emperor Xuānzong of Tang and leave the court, he said to Wei Ao: The Emperor knows the affairs of Dengzhou like the palm of his hand, and his handling and analysis are surprising. 