《宋史·列传·卷十六》
到白湖时，处耘看见士兵进入民房，过了一会儿，民房中人大呼求救，派人捕捉他们，竟是延钊的养马卒，于是鞭打他们的背部，延钊发怒杀死了他们。
至白湖，处耘望见军人入民舍，良久，舍中人大呼求救，遣捕之，即延钊圉人也，乃鞭其背，延钊怒斩之。
When they arrived at Baihu, Chu Yun saw soldiers entering civilian houses. After a while, people in the civilian houses cried out for help. He sent people to capture them and found that they were Yan Zhao's horse grooms. He whipped them on their backs. Yan Zhao was furious and killed them.