《隋书·列传·卷十》
吏部尚书牛弘回答说： 因为我们不称职，所以使皇上忧闷。 
吏部尚书牛弘对曰： 由臣等不称职，故至尊忧劳。 
Niu Hong, Minister of Civil Service replied: "It is because we are incompetent, and have caused the Emperor to be upset."
<s>[INST] Transpose the following Modern Chinese text into Classical Chinese: 吏部尚书牛弘回答说： 因为我们不称职，所以使皇上忧闷。  [/INST] 吏部尚书牛弘对曰： 由臣等不称职，故至尊忧劳。 </s>
Transpose the following Modern Chinese text into Classical Chinese: 吏部尚书牛弘回答说： 因为我们不称职，所以使皇上忧闷。
user
吏部尚书牛弘对曰： 由臣等不称职，故至尊忧劳。
assistant