《元史·列传·卷六十》
彧便称病辞职。成宗对他说： 卿要辞退是可以的，但要勉力为朕再留任几年。 
诸不至及失仪者，殿中司、监察御史同纠之。 
Yu resigned due to illness. Chengzong said to him: It is okay for you to resign, but you must try your best to stay for a few more years.