《旧唐书·本纪·卷十》
十日，皇上亲自耕种征用民用耕种的田，皇上耕种，卿、诸侯参加拨土九次，礼仪之官上奏，认为这太过分，皇上道： 朕鼓励农耕，亲自为百姓表率，遗憾的是不能耕完一千亩啊！ 
戊寅，有事于籍田，上行九推，礼官奏太过，上曰： 朕劝农率下，所恨不终千亩耳。 
On the tenth, the emperor personally ploughed civilian fields. The emperor ploughed, the ministers and princes participated in turning the soil nine times. The ceremonial officer reported that this was excessive. The emperor said: "I am encouraging farming and personally setting an example for the people. It's a pity that I can't plough 1,000 mu!"