大般涅槃經義記 6.89

6.89

第十番中，「汝問無得，我說無得」以言遣言，明無所得。咽咳舌齒和合出聲，為問、為說，實則不有，故無所得。「若說有得，是魔眷屬，非我弟子」舉過勸捨。

In the tenth turn, "You ask about non-attainment, and I speak of non-attainment" uses words to dispel words, clarifying having nothing attained. The combination of throat, cough, tongue, and teeth produces sound to form questions and form explanations; in reality, they do not exist, hence there is nothing attained. "If one says there is attainment, this is the retinue of Māra and not my disciple" cites the fault to exhort abandonment.