《明史·列传·卷二百一十五》
天顺八年春天，御史陈选进言： 鞑靼各部落，属孛来最强大。他又秘密招收三个卫所中的外族人，相互结集屯居。
八年春，御史陈选言： 鞑靼部落，孛来最强，又密招三卫诸蕃，相结屯住。
In the spring of the eighth year of the Tianshun reign, Imperial Censor Chen Xuan advised: Of all the Tatar tribes, Bolai's is the strongest. He has also secretly recruited foreigners from the three guards, who have joined together to settle down.