涅槃經遊意 1.211

1.211

涅槃復有八相，如文云：好體對五門應明五德，但不淨觀在初，聖人不為，但有四倒，四德對四倒，故明四行四德也。

Nirvāṇa further has eight characteristics. As the text states: in good essence, corresponding to the five gates, five virtues should be clarified; however, because the contemplation of impurity is at the beginning, which noble ones do not cultivate, there are only the four inversions; since the four virtues correspond to the four inversions, it clarifies the four practices and four virtues.