《资治通鉴·汉纪·汉纪三十五》
马援上奏建议，应当按旧币制铸造五铢钱。刘秀赞同。百姓都因这一措施而感到方便。
马援奏宜如旧铸五铢钱，上从之；天下赖其便。
Ma Yuan submitted a memorial proposing that five-zhu coins should be minted according to the old currency system. Liu Xiu agreed. The people were all grateful for this measure.