大般涅槃經義記 7.239

7.239

就初難中，「若佛所說不作定果，是義不然」牒以直非，「何以」下釋，釋中先徵，下對辯非，於中先就善果設難，後就惡果。

In the first challenge, "If what the Buddha says does not make a definite fruit, this meaning is not correct" cites it to directly negate it. From "Why..." onward explains it: in the explanation, it first questions, and below discriminates the negation in response; within that, it first raises a challenge regarding good fruits, and later regarding bad fruits.