《史记·七十列传·万石张叔列传》
等到文帝死去，景帝即位，景帝一年多没责斥过卫绾，卫绾只是一天比一天更谨慎地尽责。
及文帝崩，景帝立，岁馀不噍呵绾，绾日以谨力。
When Emperor Wen died and Emperor Jing ascended to the throne, Emperor Jing did not blame Wei Wan for more than a year, and Wei Wan just did his job more and more cautiously every day.