《魏书·帝纪·卷一》
渡黄河时，所率部众刚渡过一半，河冰塌陷，所剩部众全数投奔了刘阏头哥哥的儿子悉勿祈。
渡河，半济而冰陷，后众尽归阏头兄子悉勿祈。
When crossing the Yellow River, when half of his party had just crossed, the ice on the river collapsed, and the rest of his party went to Liu Yatou's brother's son, Xiwuji.