楞伽阿跋多羅寶經註解 2.188

2.188

「復次大慧！未來世智者，以離一異、俱不俱見相，我所通義，問無智者。彼即答言『此非正問。』謂色等常無常，為異不異，如是涅槃諸行、相所相、求那所求那、造所造、見所見、塵及微塵、修與修者，如是比展轉相。如是等問，而言佛說無記止論，非彼癡人之所能知，謂聞慧不具故。如來、應供、等正覺令彼離恐怖句故，說言無記，不為記說。又止外道見論故，而不為說。」

"Furthermore, Mahāmati! In future times, the wise will question the unwise using the meaning I have penetrated, which is free from the marks of views of identity and difference, both and neither. The latter will immediately answer, 'This is not a proper question.' That is to say, regarding whether form and so forth are permanent or impermanent, different or not different; and likewise regarding nirvāṇa and conditioned formations, characteristics and the characterized, guṇa and that which possesses guṇa, the created and the creator, seeing and the seen, atoms and subtle atoms, cultivation and the cultivator—such interdependent marks. When questioned about such things, they will say that the Buddha taught the cessation of discussion through the undeclared (avyākrta), which cannot be known by those foolish persons, because they lack the wisdom of hearing. It was in order to cause them to be free from phrases of terror that the Tathāgata, the Arhat, the Samyaksambuddha spoke of the undeclared and did not declare it. Moreover, it was to put an end to the tīrthikas' philosophical debates that he did not speak of it."