大方廣圓覺修多羅了義經 1.28

1.28

「善男子！但諸聲聞所圓境界身心語言皆悉斷滅，終不能至彼之親證所現涅槃，何況能以有思惟心測度如來圓覺境界。如取螢火燒須彌山，終不能著；以輪迴心生輪迴見，入於如來大寂滅海，終不能至。是故我說一切菩薩及末世眾生，先斷無始輪迴根本。善男子！有作思惟從有心起，皆是六塵，妄想緣氣，非實心體，已如空花。用此思惟辨於佛境，猶如空花復結空果，展轉妄想無有是處。善男子！虛妄浮心多諸巧見，不能成就圓覺方便。如是分別，非為正問。」

"Kulaputra, even the realm perfected by the śrāvakas, wherein body, mind, and speech are entirely cut off and extinguished, ultimately cannot reach the nirvāṇa manifested by personal realization; how much less could one measure the Tathāgata's realm of perfect enlightenment using a mind of discursive thought! It is like taking a firefly's light to burn Mount Sumeru—it can never ignite it. Using a saṃsāric mind to generate saṃsāric views and enter the Tathāgata's great sea of quiescence is something that can never be achieved. For this reason, I say that all bodhisattvas and sentient beings of the latter age must first sever the root of beginningless transmigration. Kulaputra, contrived discursive thinking arises from the conceptualizing mind; these are all the six dusts, the conditioned vapors of false thought, not the true essence of mind, and are already like flowers in the sky. To use this discursive thought to discern the Buddha's realm is like flowers in the sky further bearing sky-fruit—a proliferation of false thoughts that is entirely impossible. Kulaputra, a false and floating mind has many clever views and cannot accomplish the upāya of perfect enlightenment. Such discrimination does not constitute a proper inquiry."