《太平广记·卷四百九十七·杂录五》
韦乾度不知道牛僧孺授官的缘由，就问他什么出身，牛僧孺回答说： 进士出身。 
台参，乾度不知僧孺授官之本，问何色出身，僧孺对曰： 进士。 
Wei Qianshi didn’t know why Niu Sengru was conferred the official post, so he asked him about his origin and Niu Sengru answered that he was from Jinshi.