大般涅槃經義記 4.117

4.117

廣中先問，「迦葉白佛所說不然」牒以直非，「何以故」下顯不然相，先自徵問，後其相顯。

In the detailed [section], there is first a question: "Kāśyapa said to the Buddha, 'What you have said is not so,'" citing it to directly negate it; from "why is this" onward, he reveals the manner in which it is not so, first examining and questioning himself, and then revealing that manner.