大般涅槃經義記 6.4

6.4

In the extensive [explanation], he asks first: he asks only about the principle of emptiness, not about that which is able to see. Below, the Buddha answers, and the text has four parts: first, clarifying the meaning of emptiness; second, explaining contemplation in relation to emptiness; third, below "From the bodhisattva attaining such...", based on the latter section he concludes by clarifying the benefit of contemplation; fourth, below "I now speak among this assembly...", based on the former first section he concludes by clarifying the benefit of speaking.