仁王護國般若經疏 1.16

1.16

第三明宗。宗者，要也，所謂佛自行因果以為宗也。有以無生正觀為宗，離有無二邊假云中道。故下文云「般若無知無見、不行不受、不生不滅。」此通教意，但得於權而失於實。今以佛自行因果以為宗要，令諸聞者欣樂增修，一色一香無非般若。般若真智離有離無，雖離有無有無宛然，雖復宛然只自無相，故以無相因果以為宗也。

Third, clarifying the gist: "Gist" means the essential point, namely the cause and fruit of the Buddha's own practice taken as the gist. Some take the correct contemplation of non-arising as the gist, departing from the two extremes of existence and non-existence, provisionally called the Middle Way. Hence the text below says: "Prajñā has no knowing and no seeing, no practicing and no receiving, no arising and no ceasing." This is the intention of the shared teaching; it attains only the provisional and misses the ultimate. Now we take the cause and fruit of the Buddha's own practice as the essential gist, causing all listeners to rejoice and increase their practice, so that not a single form or single fragrance is not prajñā. The true wisdom of prajñā departs from existence and departs from non-existence; though departing from existence and non-existence, existence and non-existence are fully apparent; though fully apparent, they are intrinsically signless; therefore, the signless cause and fruit are taken as the gist.