大般涅槃經義記 2.92

2.92

下次問之，「一切法中悉有樂性」，舉其所證，五陰是法，凡聖五陰同有佛性，故言一切悉有樂性，亦有常性、我、淨性等，今旦明樂，人多好故。「唯願仙」下，請佛宣說。請為何義？為欲證入。然此文中單問所證，不問能證，至下將答師子具問。彼言云何為佛性等，問其所證；佛住何法見性了等，問其能證。准彼類此，理亦應齊，直以偈迮，略不具問，因證成果，證寂起用。

Next, it asks: "In all dharmas there is the nature of bliss" presents that which is realized; the five aggregates are dharmas, and the five aggregates of both ordinary beings and noble ones equally have buddha-nature; hence it says that all have the nature of bliss, and likewise have the nature of permanence, self, and purity, etc.; here it only explains bliss, because people mostly favor it. From "May the Sage alone..." downward requests the Buddha to proclaim it. What is the purpose of the request? It is to enter realization. However, this text only asks about that which is realized, not about that which realizes; below, when about to answer, Siṃha asks completely. His words, "What is buddha-nature?" and so forth, ask about that which is realized; "Abiding in what dharma does the Buddha see the nature clearly?" and so forth ask about that which realizes. Basing on that and analogizing with this, the principle should also be equal; it is merely that due to the constraints of verse, it is abbreviated and does not ask completely: through realization accomplishing the fruit, realizing quiescence and giving rise to functioning.