首楞嚴義疏注經 4.136

4.136

妙覺明心與佛同體，本來無妄，由乎強覺忽認所相，便有妄生。佛今已得妙空明心，何時忽然復起諸妄？此即牒而縱之，責無窮過也。即同剛藏云：「十方異生本成佛道，後起無明，一切如來何時復生一切煩惱？」

The wondrous, enlightened, and bright mind is of the same substance as the Buddha, originally free from delusion; because of forced awareness, suddenly recognizing an objectified mark, there is the arising of delusion. Now that the Buddha has attained the wondrous, empty, and bright mind, when could all delusions suddenly arise again? This takes up his point and concedes it for the sake of argument, rebuking it with the fallacy of infinite regress. This is the same as Vajragarbha's saying: "Ordinary beings of the ten directions originally completed the Buddha path, and later gave rise to avidyā; when will all Tathāgatas give rise to all afflictions again?"