《资治通鉴·唐纪·唐纪二十六》
司马承祯坚决请求返回天台山，唐睿宗同意了他的要求。
承祯固请还山，上许之。
Sima Chengzhen firmly requested to return to Tiantai Mountain, and Tang Ruizong agreed to his request.
<s>[INST] Translate the given Classical Chinese text into modern Chinese, then provide an English translation that captures the nuances of both versions. Classical Chinese: 承祯固请还山，上许之。 [/INST] Modern Chinese: 司马承祯坚决请求返回天台山，唐睿宗同意了他的要求。 English Translation: Sima Chengzhen firmly requested to return to Tiantai Mountain, and Tang Ruizong agreed to his request.</s>
Translate the given Classical Chinese text into modern Chinese, then provide an English translation that captures the nuances of both versions. Classical Chinese: 承祯固请还山，上许之。
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Modern Chinese: 司马承祯坚决请求返回天台山，唐睿宗同意了他的要求。 English Translation: Sima Chengzhen firmly requested to return to Tiantai Mountain, and Tang Ruizong agreed to his request.
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