大般涅槃經義記 7.213

7.213

「如是大我名涅槃」下是第四段，就我結成涅槃大義，下以喻顯。大涅槃中具八自在名「多珍異」，德義曠周名曰「無邊」，皆先立喻，後合可知。

From "Such a great self is called nirvāṇa" downward is the fourth section, which concludes the greatness of nirvāṇa in terms of the self; below it is revealed through metaphors. Fully possessing the eight sovereignties within mahāparinirvāṇa is called "many precious rarities"; the vast comprehensiveness of its virtues and meanings is called "boundless." In each case it first establishes the metaphor and afterward applies it, as can be known.