大般涅槃經義記 6.84

6.84

下佛先嘆，後述其言廣明無得，有十復次，前九復次以言遣相明其無得，後一復次以言遣言明其無得。就前九中，初一正就四無礙智以明無得，後八傍就餘義說之，餘義是其無礙眷屬，所以通辯。

Below, the Buddha first praises him and then confirms his words to broadly clarify non-attainment. There are ten reiterations: the first nine reiterations use words to dispel marks, clarifying non-attainment; the last reiteration uses words to dispel words, clarifying non-attainment. Among the first nine, the first directly clarifies non-attainment with reference to the four unobstructed knowledges, while the latter eight speak of it secondarily with reference to other meanings; because other meanings are the retinue of unobstructedness, they are explained comprehensively.