《汉书·传·贾邹枚路传》
学得稍有长进，就请求做小狱吏，乘机学习律令，升转为狱史，县中每遇到疑难案件，都向他请教。
稍习善，求为狱小吏，因学律令，转为狱史，县中疑事皆问焉。
As soon as he made a little progress in his studies, he asked to be a minor jailer and took the opportunity to study laws and regulations. He was promoted to jailer, and the county consulted him every time there was a difficult case.