If the mind is cleansed from lobha, dosa, moha, from all that leads to unvoluntairy binding to sense-objects (via 7 anusaya) that is called the sublime state of supreme peace, Nibbana.
MN26 says that this is what the Buddha sought. This imperishable state of peace (Snp1.11).
Why would this state not refer to awareness? Does mind transform into a non-mind and not knowing mind when all defilement are uprooted? I think the sutta’s explain that mind becomes limitless.
AN10.81 also says that when mind is detached from the khandha’s, also from vinnana, it is limitless.
Defilements limit the mind. When uprooted mind shows to be limitless.
Nibbana always refers in a practical sense to the peace and the freedom, the flexibility, the great applicability, the pliancy of a mind that is not ruled anymore by inner drifts that lead to unvoluntairy engagement with sense objects. This is no special state of concentration but just the situation of unfettering, Unbinding, Nibbana. Nibbana refers in practice to a freedom and peace of mind that is not the results of grasping but the result of the uprooting of all grasping tendencies, all unvoluntrairy engagement.
Vinnana is also almost never some bare awareness of something. MN28 explains this. If one becomes aware of something particular, a certain smell, a certain idea, sound, a visual etc. that catches the eye, ear, nose, …mind…then vinnana arises. Please take notice of this.
Vinnana refers in practice to a situation in which something has caught the eye, ear…the minds special attention and has got engaged, hooked with that, fettered via (one or more) 7 kinds of anusaya. Vinnana is in this sense also more then a bare awareness or consciousness. It is an eye, ear…mind caught moment. Vinnana refers to a situation in which mind is hooked to something seen, heard etc, Caught to a sense object via an anusaya.
The vinnana that arises this way, that is a defiled sense contact and attached knowing moment.
If you look into this in practice you can also see this is a moment that mind has become fixed upon something, is caught, and that is also a certain rigidness and burden and unfreedom.
This is very clear, at least for me, from the sutta’s but also from practice. There is such a huge difference between, for example, seeing and being caught by something seen. The last is vinnana. The mind is in a very different state when it is caught by something or not.
For example seeing. We are aware of many things when we walk. Many visuals for example, but that does not mean at all that all visuals catch our eye and mind. To become eye-and mind catching there must be some special interest from the mind towards that visual. Then mind gets hooked for a moment. That is when eye vinnana arises says MN28. But when the mind is not caught, not engaged, that is an awareness. It is very different situation. We all know this, right?
Some teachers refer to this difference as: an eye, ear…mind-caught moment is a kamma vinnana, and the other is vinnana. Arahants have no kamma vinnana, Their mind does not unvoluntairy get engaged with sense objects.
Initital engagement via 7 anusaya is in Dhamma never ones choice. It is historically grown. For example: If a man sees the woman form it is historically grown that will catch his eye (as example). This is not a result of a choice. It is also not ones choice that the mind engages via disliking and revulsion with pain. This is all historically grown, also when mind gets engaged via ‘me, mine, my self’ with a sense-object. This is not the choice of an atta or self.
When the mind it without this unvoluntairy engagement, i can see that this mind cannot be found. If you seek this mind, trying to find it, the light of that seeking does not land anywhere, as sunlight that finds no object. It just does not land.
The unengaged mind is a bit strange. It can be said to be present but one cannot establish its presence from a personal perceptive, when seeking it. It seems like it is anidassanam and without surface.
Some teachers say that it really can be found, but only when also the personal perspective collapses and not by seeking it.
I feel the best way to translate Nibbana is as peace and freedom that is the result of the extinguishment of all defilements. All that causes unvoluntairy fettering and limitations of mind. The sutta’s refer often to Nibbana as peace.
If Nibbana refers to the removal of lobha, dosa and moha from mind, (all limitations) why would Nibbana be without any knowing aspect?
Nibbana may have an etymological meaning of extinguishment ( i do not know) but then it refers to the extinguishment of the fires of lobha, dosa and moha but not of knowing. It is not that an arahant becomes not-knowing. It is not difficult to see that Nibbana refers to knowing in a not unvoluntaire engaged way. And if it refers to bhava-nirodha then, i believe, it refers to the situation that a non engaging mind does in this very life have no bhava or is beyond it and has the freedom to enter a bhava one choices to enter.