肇論疏 1.33

1.33

第四、明泥洹盡諦宗，為〈涅槃無名論〉之宗本也。盡諦即滅諦，四諦之中涅槃即第三諦也。《涅槃經》第二十三卷云：善男子！涅槃之體無有住處，真是諸佛斷煩惱處，故名涅槃。今取此語，明涅槃之宗本也。無復別有一盡處者，盡本盡於結，結盡無別盡。如此無別盡，是謂常樂我淨大涅槃也。

Fourth, explaining the lineage of the cessation-truth of nirvāṇa, which serves as the fundamental doctrinal basis for the Treatise on Nirvāṇa Being Nameless (Niepan wuming lun). The truth of exhaustion (jindi) is precisely the truth of cessation (nirodha-satya); among the four noble truths, nirvāṇa is the third truth. The twenty-third fascicle of the Nirvāṇa Sūtra says: 'Good son! The essence of nirvāṇa has no resting place; it is truly the place where all Buddhas sever afflictions, and is therefore called nirvāṇa.' Now this statement is taken to clarify the fundamental doctrine of nirvāṇa. As for 'there is not further a separate place of exhaustion': exhaustion originally exhausts the fetters; when the fetters are exhausted, there is no separate exhaustion. Such having no separate exhaustion is called the great nirvāṇa of permanence, bliss, self, and purity.