首楞嚴義疏注經 3.175

3.175

此隨變不變非界破。初二句隨變無識破，色若變時識亦隨變，名誰為識？不變下四句不變無知破，若不隨變，識則常在，元從色生，不合知空。

This is a refutation based on [the dilemma that] whether changing or unchanging, it is not a realm. The first two sentences refute it on the ground that if it changes along with them, there is no consciousness: if consciousness also changes when forms change, what can be called consciousness? The four sentences from 'If it does not change' onward refute it on the ground that if it does not change, it has no cognition: if it does not change along with them, consciousness would be permanently present; yet having originally arisen from forms, it should not cognize empty space.