仁王般若經疏 1.8

1.8

第三明經宗。夫欲講讀經，前須識大旨。此經以無生正觀為宗，離有無二見，假言中道，故下文云「波若無知無見、不行不受、不生不滅，以般若不可思議故。」不生不滅者，是中道之異名、不思議寂滅之別稱，亦名佛性，即十方佛母。一大事者，即其事也。

Third, clarifying the central theme of the sūtra. Whoever wishes to lecture on or read a sūtra must first recognize its major purport. This sūtra takes the correct contemplation of anutpāda as its central theme; leaving behind the two views of existence and non-existence, it provisionally speaks of the Madhyamā-pratipad. Therefore the text below states: 'Prajñā is without knowing and without seeing, without functioning and without receiving, without arising and without ceasing, because prajñā is inconceivable.' 'Without arising and without ceasing' is an alternative name for the Madhyamā-pratipad, a distinct designation for inconceivable extinction; it is also called the buddhadhātu, which is the mother of the buddhas of the ten directions. That which is called the 'one great matter' is precisely this matter.