《汉书·传·匈奴传上》
第三年的夏天，匈奴右贤王进入黄河以南地区骚扰侵害，于是文帝发布诏书说： 汉朝与匈奴约为兄弟，不要侵害对方的边境，汉朝送给匈奴的丝绢粮食等物很多。
其三年夏，匈奴右贤王入居河南地为寇，于是文帝下诏曰： 汉与匈奴约为昆弟，无侵害边境，所以输遗匈奴甚厚。
In the summer of the third year, the Right Xian King of the Xiongnu entered the area south of the Yellow River to harass and encroach, so Emperor Wen issued an edict, saying: The Han and the Xiongnu agreed to be brothers and not to invade each other's borders. The Han gave the Xiongnu a lot of silk, food, and other things.