《旧唐书·列传·卷一百二十四》
当初，李吉甫任宪宗朝宰相时，牛僧孺、李宗闵应考制科选士的直言极谏科。
初，吉甫在相位时，牛僧孺、李宗闵应制举直言极谏科。
At that time, when Li Jifu was the Prime Minister of the Xianzong Dynasty, Niu Sengru and Li Zongmin both took the imperial examination for the Zhishi, Zhonghui, and Zuojian Imperial Censors.