大般涅槃經義記 5.389

5.389

「汝向所問殺婆羅門時得是地不」牒第二句所少之問，准此牒辭向前定有，「我時已得」當問正答。

"What you asked earlier about whether I had attained this ground when killing the Brahmins" repeats the omitted question of the second clause; based on this repeated phrasing, it was certainly present earlier; "At that time I had already attained it" is the direct reply corresponding to the question.