金剛經纂要刊定記 6.174

6.174

"Cannot be known through verbal explanation": because the phenomenon of tathatā transcends verbal explanation, it is solely the realm of true cognition and corresponds only to personal realization; hence it is called self-realization. The first, seventh, seventeenth, and this section all state that one does not see the Tathāgata through marks, but their meanings and intents are distinct. The first doubted the cause in relation to the fruit; the next clarified that evoking the fruit transcends marks; the next explained that the provisional is manifested based on the real; the latter clarified that one seeks the real by relying on the provisional; hence they are not the same.