大般涅槃經集解 13.34

13.34

案僧亮曰：瘡譬苦也。以無苦故，名為涅槃。若但自治，不名大滅，滅一切苦乃名大滅也。悉治已者，謂有信也，雖未即差，已為差因也。僧宗曰：上釋大義，此釋涅槃義也。瘡疣是累，既無瘡疣，即是解脫。此中先明能治眾生，引醫師為喻；下去出體，廣明解脫也。

Sengliang notes: Sores are an analogy for suffering. Because it is free from suffering, it is called nirvāṇa. If one only cures oneself, it is not called great extinction; extinguishing all suffering is truly called great extinction. That 'all have already been cured' means having faith; though not immediately healed, it is already the cause of healing. Sengzong says: Above he explained the meaning of 'great'; here he explains the meaning of 'nirvāṇa.' Sores and warts are entanglements; being free from sores and warts is precisely vimokṣa. Here he first clarifies the ability to cure sentient beings, adducing a physician as a metaphor; proceeding downwards, he sets forth the essence and extensively clarifies vimokṣa.