《魏书·帝纪·卷八》
十一月初三，世宗在式乾殿给京兆王元愉、清河王元怿、广平王元怀、汝南王元悦讲授《孝经》。
十有一月甲子，帝为京兆王愉、清河王怿、广平王怀、汝南王悦讲《孝经》于式乾殿。
On November 3, Emperor Xiaozong gave lectures on the "Classic of Filial Piety" to King Yuan Yu of Jingzhao, King Yuan Yi of Qinghe, King Yuan Huai of Guangping, and King Yuan Yue of Runan in Shiqian Hall.