《魏书·列传·卷二》
用头叩击床面，哭泣不能止住。
以头叩床，涕泣不自胜。
Knocking his head on the bed, he could not stop crying.
<s>[INST] Convert the following modern Chinese text into Classical Chinese: 用头叩击床面，哭泣不能止住。 [/INST] 以头叩床，涕泣不自胜。</s>
Convert the following modern Chinese text into Classical Chinese: 用头叩击床面，哭泣不能止住。
user
以头叩床，涕泣不自胜。
assistant