大般涅槃經義記 2.97

2.97

第四迦葉謙問之中，初謙己問，「譬如王」下己彰慕持。前中初法、次喻、後合。「不能諮問智慧大海」，猶前學行；「法性虛空」，猶前學法。如來向前嘆其善問，迦葉何故謙己不能？各有所以。迦葉所問契當法相，故佛讚嘆；迦葉忖己承力方堪，自力不能，所以謙問。下慕持中，先喻、次合。「何以」下釋，文顯可知。

In the fourth part, Kāśyapa's humble question, he first humbles his own questioning, and from "Like a king" downward, he reveals his longing and upholding. In the former, there is first the dharma, next the metaphor, and finally the application. "Incapable of inquiring into the great ocean of wisdom" corresponds to the aforementioned learning of the practices; "the empty space of dharma-nature" corresponds to the aforementioned learning of the dharmas. The Tathāgata previously praised his excellent questioning; why does Kāśyapa humble himself as incapable? Each has its reason. What Kāśyapa asked accords with the characteristics of dharmas, so the Buddha praised it; Kāśyapa reckoned that he was only capable by relying on [the Buddha's] power, and was incapable by his own power, which is why he humbly questioned. In the subsequent longing and upholding, there is first a metaphor and next the application. From "Why?" downward is the explanation; the text is clear and can be known.