《明史·志·卷六十九》
宣德二年规定，处笞刑杖刑的霏囚，每打十下交赎罪钞二十贯。
宣德二年定，笞杖罪囚，每十赎钞二十贯。
In the second year of Xuande, it was stipulated that criminals sentenced to caning or flogging would have to pay 20 guan in redemption banknotes for every ten lashes.