大般涅槃經義記 1.132

1.132

文別三者，初佛對純陀開真辨應；二「純陀白佛：如是如是，誠如聖」下，純陀對文殊廣顯前真；三從「光照文殊」已下，佛對純陀廣顯前應。前中初因純陀獻供，明佛應受，實則無待無差故常。

Regarding the three textual divisions: first, the Buddha opens the true and discerns the response for Cunda; second, from "Cunda said to the Buddha: 'So it is, so it is, truly as the Sage...'" onward, Cunda extensively reveals the former true [body] to Mañjuśrī; third, from "The light illuminated Mañjuśrī" onward, the Buddha extensively reveals the former response [body] for Cunda. In the first part, initially relying on Cunda offering provisions, it clarifies that the Buddha responsively receives them, but in reality, being without dependence and without distinction, he is therefore eternal.