《太平广记·卷一百四十七·定数二》
北庭都护府城下，有少数民族的部落达到上万个帐蓬。伷先就投降这个部落了，部落首领对伷先以礼相待，并把他的女儿嫁给伷先，可汗只有一个女儿，特别疼爱，就赠给伷先很多黄金和马牛羊。
北庭都护府城下，有夷落万帐，则降胡也，其可汗礼伷先，以女妻之。可汗唯一女，念之甚，赠伷先黄金马牛羊甚众。
Under the city of Bei Ting Prefecture, there were tens of thousands of ethnic minority tents. Zhou Xian surrendered to the tribe. The leader of the tribe treated Zhou Xian with courtesy and married his daughter to Zhou Xian. The Khan had only one daughter, whom he loved very much, and gave Zhou Xian a lot of gold, horses, cattle, and sheep.