華嚴一乘教義分齊章 4.49

4.49

五者、微細相容安立門。此上諸義，於一念中具足，始終同時。別時前後逆順等一切法門，於一念中炳然同時齊頭顯現，無不明了，猶如束箭齊頭顯現耳。故此經云「菩薩於一念中從兜率天降神母胎，乃至流通舍利，法住久遠，及所被益諸眾生等，於一念中皆悉顯現。」廣如經文。又云「一毛孔中無量佛剎，莊嚴清淨，曠然安住。」又云「於一塵內微細國土，一切塵等悉於中住。」宜可如理思之。問：「是義與上因陀羅何別耶？」答：「重重隱映互現，因陀羅攝；齊頭炳然顯著，微細攝。此等諸義並別不同，宜細思之。」

Fifth is the approach of the subtle mutual accommodation and establishment. The various meanings above are complete within a single thought-moment, beginning and end being simultaneous. All the Dharma approaches of different times, before and after, conformable and adverse, etc., are vividly and simultaneously revealed together in a single thought-moment, none of them unclear, just like a bundle of arrows showing their tips all at once. Therefore, this sūtra says: 'A bodhisattva, in a single thought-moment, descends from the Tuṣita heaven into the mother's womb, up to distributing the relics, the long endurance of the Dharma, and the various sentient beings benefited; all are manifested within a single thought-moment,' as detailed in the sūtra text. It also says: 'Within a single pore, immeasurable buddha-lands / Are adornment and pure, / Spaciously dwelling at ease.' It also says: 'Within a single dust particle, subtle lands, / Equal to all dust particles, all dwell within it.' One should reflect on this in accordance with principle.
Question: 'What is the difference between this meaning and Indra['s net] above?'
Answer: 'Multilayered mutual manifestation through concealment and revelation belongs to the subsumption of Indra['s net]; vivid and clear manifestation together all at once belongs to the subsumption of the subtle. These various meanings are distinct and not the same; one should reflect on them closely.'