大般涅槃經義記 4.128

4.128

就初段中，先明經力令人滅罪，「如日月光諸明最」下明經力故令人發心。前中四句：一經力滅罪、二「是大涅槃甚深」已下嘆經深勝、三「以是義」下勸人修學、四「是故此經名無量」下重嘆經勝。前中初言「譬如日中眾霧悉除」喻經滅罪，後合可知。第二嘆經，文相可解。第三勸中，「應於如來生常心」等勸人正知，「是故應當多修是典」勸人勤學，「是人不久常得」已下明其正知勤學之益。第四嘆中，「是故此經無量德成」嘆其德廣，以修習者當得菩提，故為無量功德所成。「亦名菩提不可盡」者嘆其德常，以前三寶不斷滅故名不可盡。「以不盡故名大涅槃」以常顯大。「有善光」下以廣顯大，善光用廣。「身無邊」者明其體廣。具此二廣「名大涅槃」。

Within the first segment, it first explains that the power of the sūtra causes people to eradicate transgressions; from "Like the light of the sun and moon, which is the foremost of all luminaries" onward, it explains that through the power of the sūtra, it causes people to generate the resolve. In the former part, there are four clauses: first, the power of the sūtra eradicating transgressions; second, from "This Great Nirvāṇa is profound..." onward, praising the depth and excellence of the sūtra; third, from "For this reason..." onward, exhorting people to cultivate and study; fourth, from "Therefore, this sūtra is named Immeasurable..." onward, repeatedly praising the excellence of the sūtra. In the former part, the opening statement, "Just as in the midday sun all mists are completely dispelled," is a metaphor for the sūtra eradicating transgressions; the subsequent application can be understood. In the second, the praise of the sūtra, the textual phrasing can be understood. In the third, the exhortation, "One should give rise to the thought of permanence regarding the Tathāgata," etc., exhorts people to correct knowledge; "Therefore, one should extensively cultivate this scripture" exhorts people to diligent study; from "This person before long will constantly attain..." onward, it explains the benefit of correct knowledge and diligent study. In the fourth, the praise, "Therefore, this sūtra is accomplished with immeasurable virtues" praises the vastness of its virtues; because those who cultivate it will attain bodhi, it is accomplished with immeasurable virtues. "It is also named Bodhi Inexhaustible" praises the permanence of its virtues; because the Three Jewels mentioned previously are uninterrupted and unextinguished, it is named inexhaustible. "Because it is inexhaustible, it is named Great Nirvāṇa" reveals greatness through permanence. From "Having wholesome light" onward reveals greatness through vastness; wholesome light is vast in function. "The body is boundless" explains the vastness of its substance. Endowed with these two kinds of vastness, "it is named Great Nirvāṇa."