《明史·列传·卷四十八》
皇上因魏源廉正有为，任命他为左布政使，让他乘驿车赶去赴任。
帝以源廉正有为，命为左布政使，俾驰驿之任。
The emperor appointed Wei Yuan as the Left Assistant Minister of Revenue due to his integrity and competence, and he was allowed to ride a postal carriage to assume the post.