《隋书·列传·卷十二》
开皇四年，因母丧离职。
四年，丁母忧去职。
In the fourth year of Kaihuang, he left his post due to his mother's mourning.
<s>[INST] Convert the following English text into Classical Chinese: In the fourth year of Kaihuang, he left his post due to his mother's mourning. [/INST] 四年，丁母忧去职。</s>
Convert the following English text into Classical Chinese: In the fourth year of Kaihuang, he left his post due to his mother's mourning.
user
四年，丁母忧去职。
assistant