大般涅槃經義記 6.42

6.42

自下次明七善法果，以修七善化他智故，成就出世一切智德是其果也。於中，初明具八知見，「得何利」下得四無礙。前八知見所知寬廣名一切智，後四無礙所知自在名無礙智。隨相分別，由前知時、知足、自知、知眾及與知尊卑，故具八知見；由前知法及知義故得四無礙。通則俱得。

From here down next clarifies the fruits of the seven good dharmas: by cultivating the wisdom for transforming others through the seven good [dharmas], the achievement of the virtuous quality of all-knowledge that is world-transcending is their fruit. In this, it first clarifies being endowed with the eight kinds of knowledge and vision; "What benefit is attained..." and below [clarifies] attaining the four unobstructed knowledges. The former eight kinds of knowledge and vision, being broad in what is known, are named all-knowledge; the latter four unobstructed knowledges, being unimpeded in what is known, are named unobstructed knowledge. Distinguishing according to their aspects: through previously knowing the time, knowing contentment, knowing oneself, knowing the assembly, and knowing the superior and inferior, one is endowed with the eight kinds of knowledge and vision; through previously knowing the teaching and knowing the meaning, one attains the four unobstructed knowledges. Broadly speaking, both are attained together.