《明史·列传·卷二百一十一》
第二年，其朝贡的使者到达浙江，主持市舶事务的官员又请求朝廷没收其使者私自携带的物品，皇帝说： 番人通过贸易来获取利益，他们所私带的两种东西没收来也没什么用，还是全还给他们，作为命令传下去。 
明年，贡使至浙江，典市舶者复请籍其所赍，帝曰： 番人以贸易为利，此二物取之何用，其悉还之，著为令。 
The following year, when the tribute envoys reached Zhejiang, the officials in charge of trade affairs asked the Emperor to confiscate the goods that the envoys carried with them for personal use. The Emperor said: “The barbarians come via trade to secure their profits, and the two things that they brought are not of any use even if we confiscate them. We should return them so as to establish goodwill.”