《史记·七十列传·袁盎晁错列传》
汉文帝的时候，天下没有研究《尚书》的人，只听说济南伏先生是原来秦朝的博士，研究过《尚书》，年老不能应召，文帝于是下令太常派人前往他那里学习。
孝文帝时，天下无治尚书者，独闻济南伏生故秦博士，治尚书，年九十馀，老不可徵，乃诏太常使人往受之。
During the reign of Emperor Wen of the Han Dynasty, no one in the world studied the "Book of Documents". It was only heard that Mr. Fu in Jinan was a doctor from the Qin Dynasty and had studied the "Book of Documents". He was too old to be called up, so Emperor Wen ordered the Taichang to send someone to learn from him.