《管子·山至数》
也就是说，无论某县的土地多大，也无论某县多小，都必须有一笔货币贮备。在该县州里向农民贷放公款。
曰：某县之壤广若干，某县之壤狭若干，则必积委币，于是县州里受公钱。
That is to say, no matter how large or small the land of a county is, it must have a monetary reserve. In the state and county, public funds should be loaned to farmers.”