金剛經纂要刊定記 6.82

6.82

鏡中下。喻明也。故知鏡中有物却不能現物，如凡夫雖有法身不能現相好者，蓋緣有物。所言物者，妄身心也。

"Within the mirror," and so forth: clarifying by metaphor. Hence we know that if an object is inside the mirror, it is conversely unable to manifest objects; just as ordinary beings, though possessing the dharmakāya, cannot manifest the major marks and minor characteristics because an object is present. The so-called "object" is the deluded body and mind.