《水经注·卷一》
渡过这条小河，用旗檀木作柴火，天界的神人们各自用火来烧柴，但都点不着。大迎叶从流沙回来，呼号痛哭，悲不自胜，感动了天地，这以后不用点火，柴枝就自行燃烧起来。
以栴檀木为薪，天人各以火烧薪，薪了不燃，大迦叶从流沙还，不胜悲号，感动天地，从是之后，他薪不烧而自然也。
After crossing the small river, the sandalwood was used as firewood, and the gods in the heavens used their own fires to burn the firewood, but they couldn't light it. Da Yinye cried with pain when he returned from Liusha and was so sad that he touched the heavens and the earth. After that, the firewood burned on its own without burning.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 以栴檀木为薪，天人各以火烧薪，薪了不燃，大迦叶从流沙还，不胜悲号，感动天地，从是之后，他薪不烧而自然也。 [/INST] After crossing the small river, the sandalwood was used as firewood, and the gods in the heavens used their own fires to burn the firewood, but they couldn't light it. Da Yinye cried with pain when he returned from Liusha and was so sad that he touched the heavens and the earth. After that, the firewood burned on its own without burning.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 以栴檀木为薪，天人各以火烧薪，薪了不燃，大迦叶从流沙还，不胜悲号，感动天地，从是之后，他薪不烧而自然也。
user
After crossing the small river, the sandalwood was used as firewood, and the gods in the heavens used their own fires to burn the firewood, but they couldn't light it. Da Yinye cried with pain when he returned from Liusha and was so sad that he touched the heavens and the earth. After that, the firewood burned on its own without burning.
assistant