金剛經纂要刊定記 5.296

5.296

斷疑。經意云：以一切法並以真如為體，一切之言凡聖收盡，故皆佛法。真如既是佛法，餘法豈非佛法耶？如一切像以鏡為體故，故一切像皆是鏡像。又所言一切法，非定實一切法，是全空一切法。

Severing doubt. The meaning of the sūtra is: Because all dharmas take tathatā as their essence, and the phrase "all" subsumes both ordinary beings and nobles completely, therefore all are the Buddha-Dharma. Since tathatā is the Buddha-Dharma, how could the remaining dharmas not be the Buddha-Dharma? Just as all reflections take the mirror as their essence, so all reflections are mirror-reflections. Furthermore, what are called "all dharmas" are not definitely real dharmas; they are all dharmas that are entirely empty.