《资治通鉴·魏纪·魏纪三》
当时，左仆射徐宣总管留守京师之事，明帝归来后，主事官吏把徐宣批示后的文书呈送明帝过目，明帝说： 我审阅和仆射审阅有什么不同！ 
时左仆射徐宣总统留事，帝还，主者奏呈文书。帝曰： 吾省与仆射省何异！ 竟不视。
At that time, Left Minister of the Bureau of Finance Xu Xuan was in charge of all the affairs related to guarding the capital. After Emperor Ming returned to the capital, the officers in charge of documents presented Xu Xuan's approved documents to Emperor Ming for review. Emperor Ming said, "What's the difference between my review and the minister's?"