《明史·列传·卷六十六》
成化十年闰六月，余子俊向朝廷一一禀报工程之事，因为母亲年老恳求回乡，朝廷安慰挽留他，没有批准他返乡的请求。
十年闰六月，子俊具上其事，因以母老乞归，慰留不许。
In the intercalary June of the tenth year of Chenghua, Yu Zijun reported the details of the project to the imperial court. Because his mother was old and he asked to return to his hometown, the imperial court comforted and kept him and did not approve his request to return home.