《资治通鉴·隋纪·隋纪八》
于是房彦藻就把翟让身边的人全都带走了。唯独留李密辖下的壮士蔡建德持刀侍立。
乃引让左右尽出，独密下壮士蔡建德持刀立侍。
So Fang Yanzao brought all of Di Rang's personal guards away. Only Li Mi's bold knight Cai Jinde was left to stand by and protect him with a knife.