《汉书·志·沟洫志》
从开凿郑国渠的时候起，到元鼎六年，有一百三十六年了，而倪宽为左内史，上奏请求开凿六辅渠，以利于郑国渠一带地高的农田的灌溉。
自郑国渠起，至元鼎六年，百三十六岁，而儿宽为左内史，奏请穿凿六辅渠，以益溉郑国傍高卬之田。
From the time Zhengguo Canal was excavated until the sixth year of Yuanding, there were one hundred and thirty-six years, and Ni Kuan was the Left Nei Shi, and submitted a request to excavate the Six Auxiliary Canals in order to facilitate the irrigation of farmland in the Zhengguo Canal area.