《明史·列传·卷十三》
当郭子兴捉住孙德崖，孙德崖军也拘捕了朱元璋时，徐达挺身而出，到孙德崖军中请求代替朱元璋，朱元璋得以获还，徐达也获免逃脱。
子兴执孙德崖，德崖军亦执太祖，达挺身诣德崖军请代，太祖乃得归，达亦获免。
When Guo Zixing captured Sun Deya, Sun Deya’s army also detained Zhu Yuanzhang. Xu Da stepped forward to Sun Deya’s army and asked to replace Zhu Yuanzhang, and Zhu Yuanzhang was released. Xu Da was also spared.