《水经注·卷六》
侯甲水又西流，与婴侯之水汇合，流经邹县老城南―这是晋大夫司马弥牟的食邑―称为邹水，民间也叫虑水，虑、乌仔读音相近，因而字也转变了。
侯甲水又西，合于婴侯之水，径邬县故城南，晋大夫司马弥牟之邑也。谓之邬水，俗亦曰虑水。虑、邬声相近，故因变焉。
The Houjia River flows further west, converges with the Yinghou River, and flows south of the old city of Zou County-this is the fiefdom of Sima Mimi, a doctor of Jin-and is called the Zou River. It is also called the lv River, which sounds similar to Wu, thus the word is also transformed.