《礼记·大传》
庶子不能为长子服丧三年，因为庶子不继承始祖庙。
庶子不得为长子三年，不继祖也。
The concubine cannot mourn for the eldest son for three years because the concubine does not inherit the ancestral temple.
<s>[INST] Convert the following English text into Classical Chinese: The concubine cannot mourn for the eldest son for three years because the concubine does not inherit the ancestral temple. [/INST] 庶子不得为长子三年，不继祖也。</s>
Convert the following English text into Classical Chinese: The concubine cannot mourn for the eldest son for three years because the concubine does not inherit the ancestral temple.
user
庶子不得为长子三年，不继祖也。
assistant