《北史·列传·卷三》
起先，卫王仪死后，道武帝想要和皇室宗亲加深感情，就下诏召见各亲王的子弟进宫饮宴。
初，卫王死后，道武欲敦宗亲之义，诏引诸王子弟入宴。
In the beginning, after King Wei died, Dao Wudi wanted to deepen the relationship with the royal family, so he summoned the children of all the princes to the palace for a banquet.