《北齐书·列传·卷四十四》
他极其刻苦，竟然有三年不用枕头睡觉，每到入睡时，仅是坐着打瞌睡而已。
用心精苦，曾三冬不畜枕，每至睡时，假寐而已。
He was extremely hardworking and did not use a pillow for three years. When he fell asleep, he could only sit and doze off.
<s>[INST] Rewrite the following English passage in the style of Classical Chinese: He was extremely hardworking and did not use a pillow for three years. When he fell asleep, he could only sit and doze off. [/INST] 用心精苦，曾三冬不畜枕，每至睡时，假寐而已。</s>
Rewrite the following English passage in the style of Classical Chinese: He was extremely hardworking and did not use a pillow for three years. When he fell asleep, he could only sit and doze off.
user
用心精苦，曾三冬不畜枕，每至睡时，假寐而已。
assistant