《太平广记·卷十三·神仙十三》
埋葬以后，忽然看见州的东北牛脾山头被紫云覆盖，云中传出号哭的声音，都知道这是苏仙公在哭他的母亲。
葬后，忽见州东北牛脾山，紫云盖上，有号哭之声，咸知苏君之神也。
After the burial, suddenly the top of Niupi Mountain in the northeast of the prefecture was covered in purple clouds, and a mournful crying sound came from the clouds. Everyone knew that it was Su Xian Gong mourning his mother.