大般涅槃經集解 51.30

51.30

案道生曰：凡夫結斷亦名涅槃，故及之也。未都盡故，不名為盡。於縛有解，亦名解脫也。善性者，亦是妙善也。不實不真者，不見常故也。無常乃至不淨者，還起結故，是故無也。

Daosheng comments: Ordinary beings' cutting off of afflictions is also called nirvāṇa, and therefore it is mentioned here. Because they are not yet completely exhausted, it is not called 'exhaustion.' Because there is release from fetters, it is also called 'liberation.' 'Wholesome nature' likewise means wondrous wholesomeness. 'Not real and not true' means not seeing permanence. 'Impermanence' up to 'impurity' means that afflictions arise again, and therefore [these qualities] are absent.