大般涅槃經義記 6.62

6.62

自下第二明無礙智，於中有二：一明菩薩具八知見，得四無礙；二「迦葉白：如佛光說〈梵行品〉」下就四無礙明得、不得。前中，迦葉初問起發，「能如是知，得何等利」。下佛答之，文別有四：一明所得，得四無礙；二列四名；三廣辯相；四「聲聞、緣覺若得是四，無是處」下就人辯足。「菩薩知見得四無礙」是初段也，「法義辭樂」第二列名，義如別章，此應具論。

From here, the second part clarifies unobstructed knowledge, in which there are two sections: first, clarifying that the bodhisattva who possesses the eight knowledges and visions attains the four unobstructed knowledges; second, from "Kāśyapa addressed the Buddha: 'Just as the Buddha spoke at length in the "Chapter on Pure Conduct"'" downward, clarifying attainment and non-attainment with respect to the four unobstructed knowledges. In the former, Kāśyapa first initiates with a question: "Being able to know in this way, what benefit is obtained?" Below, the Buddha answers him; in the text there are four distinct parts: first, clarifying what is attained, attaining the four unobstructed knowledges; second, listing the four names; third, extensively explaining their marks; fourth, from "if śrāvakas and pratyekabuddhas could attain these four, there is no such possibility" downward, explaining sufficiency with respect to persons. "The bodhisattva's knowing and seeing attains the four unobstructed knowledges" is the first section. "Dharma, meaning, phrasing, and delightful discourse" is the second, listing the names; their meanings are as in the separate chapter, and should be treated fully here.