大般涅槃經義記 2.20

2.20

Among the five, what is the distinction between the first two? The former shows that their own ignorance has not been severed; the latter clarifies that because their own ignorance remains, they cannot attain the Tathāgata's three-element nirvāṇa. What is the distinction between the next two? The former shows that their own four entrenchments have not been severed; the latter clarifies that because their own four entrenchments remain, they cannot attain peace and joy. Thus there are five distinctions.