大般涅槃經義記 1.196

1.196

前中有四：初「如是如來豈是行」者，審定其言；二「若是行」下，縱以示過，明同諸行則有生滅流轉之過；三「我聞」下，明有生滅流轉之過，便非尊勝；四「是故」下，結呵文殊。就初段中，「如是如來」，牒上之詞。所謂如是天上人中最勝如來，豈是行耶？審定其言，疑問不決，故言豈耶。

In the former part there are four: first, "Is such a Tathāgata a formation?" examines and determines his words; second, from "If he were a formation..." downward, he concedes [the premise] to show the fault, explaining that if identical to all formations, there would be the fault of production, cessation, and transmigration; third, from "I have heard..." downward, he explains that if there were the fault of production, cessation, and transmigration, he would not be honored and supreme; fourth, from "Therefore..." downward, he concludes by scolding Mañjuśrī. In the first section, "such a Tathāgata" refers back to the words above. That is to say, is such a Tathāgata, the most supreme among devas and humans, a formation? He examines and determines his words; it is a question of doubt and indecision, which is why it says "could it be?"