《农桑辑要·典训·先贤务农》
任延便叫百姓铸造各种农具，教给他们使用的方法，开垦土地。从此新开辟的耕地年年增加，百姓生活充足。
延乃令铸作田器，教之垦辟；岁岁开广，百姓充给。
Ren Yan ordered the people to cast various agricultural tools, taught them how to use them, and reclaimed the land. Since then, the newly opened farmland has increased year by year, and the people's lives have been abundant.