大般涅槃經義記 5.285

5.285

佛答有三：一類答前問；二「是無量心體性四」下總答前問，亦名通答；三「如汝所言慈斷瞋」下別問前答。前中，初以說法不定類四無量，「或有眾生貪財貨」下化人不定類四無量。說不定中，「如來為生宣說法要祕密難知」總以標舉，下別顯之。別中初明開合不定，「如來有大方便」已下法相不定。

The Buddha's answer has three parts: first, analogizing to answer the previous questions; second, from "The essence of this immeasurable mind is four" downward, answering the previous questions in general, which is also called the comprehensive answer; third, from "As you have said, loving-kindness severs anger..." downward, separately answering the previous questions. In the first part, it initially uses the non-fixed nature of preaching the Dharma to analogize the four immeasurables; from "Or there are sentient beings who are greedy for wealth and goods" downward, it uses the non-fixed nature of transforming people to analogize the four immeasurables. Within the non-fixed nature of preaching, "The Tathāgata's proclaiming the essentials of the Dharma for sentient beings is secret and difficult to know" generally indicates it, and below reveals it separately. In the separate explanation, it first clarifies that expanding and condensing are not fixed; from "The Tathāgata has great expedient means" downward, the characteristics of dharmas are not fixed.