大般涅槃經義記 2.186

2.186

In the first section, "self-correcting" is introduced, and "meaning attaining nirvāṇa" explains and reveals its mark; "correcting others" is introduced, and "I speak for the monks of the permanent and unchanging" explains and reveals its mark; "according with questions" is introduced, and the explanation below can be understood; "causes and conditions" is introduced, and its mark is explained below. It first cites the two vehicles' lack of understanding of causes and conditions and lack of understanding of the profound meaning, directly clarifying their non-understanding; from "not having heard" onward, it shows the reason for the two vehicles' non-understanding. It is because of their not having heard: not having heard the letter *i*, not having heard the present simile, not having heard that liberation, nirvāṇa, and prajñā constitute the secret treasury, and not having heard the present teaching. However, while the text above declared that dharmakāya, liberation, and prajñā constitute the secret treasury, here it states that liberation, nirvāṇa, and prajñā constitute the secret treasury; why are they not the same? Within the great nirvāṇa, the various virtues share the same substance and completely integrate with one another; mentioning either interchangeably is acceptable. From "I now" onward, it clarifies that the Buddha skillfully understands and reveals it for their sake; concluding the four marks is initiated from the initial question regarding nirvāṇa.