《资治通鉴·汉纪·汉纪四》
相国萧何因为长安地方狭窄，而皇家上林苑中有很多空地，且荒弃不崐用，希望能让百姓入内耕种，留下禾杆不割，作为苑中鸟兽的饲料。
相国何以长安地狭，上林中多空地，弃；愿令民得入田，毋收稾，为禽兽食。
Xiangguo Xiao He saw that Chang'an was narrow, while the royal Shanglin Garden had much empty land, and it was barren and unused, so he hoped to let the people in to cultivate, leaving the straw uncut as feed for the birds and beast in the garden.