Part 3 - The mind arising as the six collection of sense is unreal

Arising as the objects of the six collections:

Within the appearance of mind there is no nature at all.
It is not found by seeking. By looking it is not seen.
It has no shape or color. No essence is there to grasp.
Nothing is either within the mind or outside of it.
Nowhere does it rise or cease throughout the three times.
There are no parts and divisions; no things; no ground or root.
There is nothing to characterize by saying, “It is this.”
Mind is beyond the objects of conceptual thought.

When mind is viewed by mind, knowing that no nature at all is identified is knowing the suchness of the natural state. The Dohakosha says:

The root of mind is markless.
In triple co-emergence:
Where it rises it sets.
There is nowhere it endures.

Also:

True mind has no opposite.
It sets where it arises.
Its outside is within.

Also:

Within the primordially purity
That is the nature of space,
By always looking and looking,
Seeing will be obstructed.

This is beyond conception, thought, and all complexity. The Noble Sutra of the Source of the Three Jewels (‘phags pa dkon mchog ‘byung gnas kyi mdo) says:

There is nowhere dharmas are born, and nowhere they arise.
No dying and transmigration, nor any becoming joyful.

Because the Lion of Men has taught all this completely,
Hundreds of sentient beings have been established within it.

There is no essence at all, of any kind whatsoever.
Yet there is nothing else. No one has ever found it.

Nothing is within us. External things are unfound.
These teachings were presented by the Protector himself.

The sugatas taught to beings,^[1] the way to go to peace,
But there is no actual being who is ever going to find it.

These completely teach the liberation of beings.
Having been liberated, many beings are free.

Because all dharmas are taught to be without a self,
Sentient beings are freed from this universe of grasping.

We are liberated from going,^[2] and by liberation from going,
We can go to a place that is beyond compare.

The great Sage has attained the other shore of samsara.
Yet no other place to go was ever found at all.

Though nowhere else exists, and there is no return,
“I have gone to the other shore,” is what is taught in words.

However, one who speaks these words does not exist.
Neither the one who spoke them nor the words themselves exist.

One to whom they are spoken also will not be found.
One who attains what is spoken is nowhere to be seen.

Because of wrong conception by the power of desire,
All these beings here are simply wandering.

Whoever understands the Dharma of perfect peace,
Sees the self-arising of the Tathagata.

Peaceful ones completely know the highest Dharma.

Regarding its being groundless and rootless the Secret Essence says:

As for the groundless, rootless nature of mind,
It is not male or female, nor is it neuter.
It is not sexless, and has no pedigree.
It has no color, and it has no shape.
It is not existent as anything.