《魏书·帝纪·卷一》
突然遇到一只形似马、声如牛的神兽，为他们引路，经过一年的跋涉，才脱离险境，迁居到匈奴故地。
有神兽，其形似马，其声类牛，先行导引，历年乃出。始居匈奴之故地。
Suddenly he encountered a divine beast shaped like a horse and sounding like a cow, which led them the way. After a year’s journey, they finally left the danger zone and moved to the former site of the Huns.