《旧唐书·列传·卷一百二十一》
李渤后来因奏疏的拟文措语严厉、无所顾忌，与宰相大相径庭，于是以有病为由归返东都。
渤既以草疏切直，大忤宰相，乃谢病东归。
Li Bo later returned to the eastern capital on the pretext of illness because the wording of the memorial he had drafted was harsh and unrestrained, which was totally different from the prime minister’s views.
<s>[INST] Convert the following modern Chinese text into Classical Chinese: 李渤后来因奏疏的拟文措语严厉、无所顾忌，与宰相大相径庭，于是以有病为由归返东都。 [/INST] 渤既以草疏切直，大忤宰相，乃谢病东归。</s>
Convert the following modern Chinese text into Classical Chinese: 李渤后来因奏疏的拟文措语严厉、无所顾忌，与宰相大相径庭，于是以有病为由归返东都。
user
渤既以草疏切直，大忤宰相，乃谢病东归。
assistant