《明史·志·卷五十七》
于是更严格禁止，交易用银一钱的，罚钞一千贯，贪赃官吏收受银一两的，追缴钞一万贯，更追收免罪钞如同这样。
乃益严其禁，交易用银一钱者，罚钞千贯，赃吏受银一两者，追钞万贯，更追免罪钞如之。
So a stricter ban was imposed, for every silver penny used in a transaction, a fine of one thousand guan of banknotes was imposed, and for every silver tael received by a corrupt official, ten thousand guan of banknotes were confiscated, and banknotes for exemption from punishment were also confiscated in the same way.