大般涅槃經集解 46.86

46.86

案僧亮曰：以變法名異。法無常故，異亦應爾也。僧宗曰：亦應類前句云，異亦是常。以壞無常，異亦無常也。此互其文耳。今舉法者，爾所生能生同是有為也。又其前云：生若無常，則有漏是常。就言中相關，故此一句明法亦是無常也。

Sengliang says: The transformation of a dharma is termed difference. Because the dharma is impermanent, difference must likewise be so. Sengzong says: By analogy with the previous line, it should also say 'difference is permanent; because decay is impermanent, difference is also impermanent.' The phrasing here is mutually complementary. Now, mentioning 'the dharma' indicates that both that which is born and that which can give birth are equally conditioned. Furthermore, earlier it was said: 'If birth is impermanent, then defilement is permanent.' Since the phrasing was interrelated, this line clarifies that the dharma is likewise impermanent.