大般涅槃經義記 3.6

3.6

Below, "is none other than the Tathāgata, called not empty-empty" is the ninetieth, clarifying that it is distinct from the liberation attained by non-Buddhists. It first lists its name: the liberation of non-Buddhists is illusory and without reality, named "empty-empty"; the true is not like that, named "not empty-empty". Next it explains its characteristics: first explaining empty-empty: saying "empty-empty means having nothing at all" explains its meaning of emptiness; "it is none other than the liberation of the non-Buddhist Nirgrantha" criticizes in terms of the person; "yet this Nirgrantha in reality has no liberation" explains emptiness in terms of the person; "the true is not like this" clarifies that it has a distinct emptiness. The conclusion can be known.