大般涅槃經義記 1.176

1.176

次三偈中，「如來在僧」，述上偈中久住世間，利無量眾，明住身益，僧猶是前無量眾矣。「演無上法」，述前偈中演智所讚無上甘露，明住口益。「如須彌山安處大海」，顯前如來在僧之益，須彌寶成，映發大海；佛眾德成，顯發大眾。「佛智能」下，顯前演說無上法益，佛智能斷我等無明，除無明地，如虛空中起雲清涼，喻以顯之。佛如虛空，說如起雲，由斷無明，四住不生，猶如日出，除雲光照，喻以顯之。斷除四住，由滅無明，故如日出，除雲光照，斯乃本末互相顯示。

Within the next three verses, "The Tathāgata residing among the Saṃgha" recounts "abiding long in the world, benefiting immeasurable multitudes" in the verse above, explaining the benefit of his bodily abiding, the Saṃgha being equivalent to the immeasurable multitudes spoken of earlier. "Expounding the unsurpassed Dharma" recounts "expounding the unsurpassed ambrosia praised by wisdom" in the preceding verse, explaining the benefit of his vocal abiding. "Like Mount Sumeru resting securely in the great ocean" illuminates the aforesaid benefit of the Tathāgata residing among the Saṃgha; Sumeru is formed of jewels, reflecting and brightening the great ocean; the Buddha is formed of all virtues, illuminating and elevating the great assembly. From "The Buddha's wisdom can" downward, it illuminates the aforesaid benefit of expounding the unsurpassed Dharma: the Buddha's wisdom can sever our ignorance and eliminate the ground of ignorance, like cool clouds arising in the open sky, illuminating this by means of an analogy. The Buddha is like the open sky, and his teaching is like the arising of clouds; because ignorance is severed, the four entrenchments do not arise, just like the sun rising, dispelling the clouds and shining light, illuminating this by means of an analogy. Severing and eliminating the four entrenchments is due to extinguishing ignorance; hence it is like the sun rising, dispelling the clouds and shining light; these are the root and branches mutually illuminating each other.