《水经注·卷四》
据传说，汉武帝微服出行到柏谷，受到窦门的羞辱，又感谢窦门妻子慧眼识英雄，备酌款待他，回皇宫后，就给她丰厚的赏赐，并把津渡赐给他们，让他们靠收取渡钱谋生，就是现在的窦津。
说者咸云，汉武微行柏谷，遇辱窦门，又感其妻深识之馈，既返玉阶，厚赏赍焉，赐以河津，令其鬻渡。今窦津是也。
According to legend, Emperor Wu of the Han Dynasty traveled incognito to Bai Gu, was humiliated by Dou Men, and then thanked Dou Men's wife for her keen eye for heroes and for her hospitality. After returning to the imperial palace, he gave her a generous reward and gave them the ferry to allow them to make a living by collecting money for the crossing, which is today's Doujin.