O bhikkhus, what is the Absolute (Asaṃkhata, Unconditioned)? It is, O bhikkhus, the extinction of desire (rāgakkhayo) the extinction of hatred (dosakkhayo), the extinction of illusion (mohakkhayo). This, O bhikkhus, is called the Absolute.
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And
"O good man! We speak of "Nirvana". But this is not "Great” “Nirvana". Why is it "Nirvana", but not "Great Nirvana"? This is so when one cuts away defilement without seeing the Buddha-Nature. That is why we say Nirvana, but not Great Nirvana. When one does not see the Buddha-Nature, what there is is the non-Eternal and the non-Self. All that there is is but Bliss and Purity. Because of this, we cannot have Mahaparinirvana, although defilement has been done away with. When one sees well the Buddha-Nature and cuts away defilement, we then have Mahaparinirvana. Seeing the Buddha-Nature, we have the Eternal, Bliss, the Self, and the Pure.