《金史·列传·卷四十六》
我见沿河上下允许贩运粟米北渡，但每石由官府买去八斗。那些商人并非有心周济民众，他们之所以渡河往来，只是因为有厚利可得，既然无利，谁又肯干？
伏见沿河上下许贩粟北渡，然每石官籴其八，彼商人非有济物之心也，所以涉河往来者特利其厚息而已，利既无有，谁复为之？
I saw that the transportation of rice and corn was allowed upstream and downstream along the river, but eight buckets were purchased by the government for each stone. Those businessmen did not intend to help the people. The reason why they crossed the river and came and went was just because they could make a lot of profits. Since there was no profit, who would do it?