Part 3 - The final summary

a. The instruction that the meaning of being without accepting and rejecting is being without grasping and fixation

Now, as for the final summary:

Thus all dharmas are not grasped as different.
These reflections possess the nature of non-duality.
This play has no good and evil, accepting or rejecting.
Rest where no duality is fixated by mind.

Essentially pure suchness arising as play is beyond action, seeking, memory, and thought. As for resting in the non-duality of mahasukha, the All-Creating King says:

Within the unborn, in dharmata completely pure,
The appearance of things that are born rises like a reflection.
Since the nature of arising is non-dual with that,
Rest in mahasukha, the effortless nature of suchness.

b. The nature of the great perfection is without fixation

When one rests there:

Fixed objects do not arise when there are no reference points.
Insight without fixation is the completeness of being,
The nature of the great perfection, the natural state.

At this time non-fixating insight arises in natural freedom from all assertions and denials. The great perfection is spontaneously present.

The All-Creating King says: Kye!
I, bodhicitta, the king who is the doer of all,
Have neither glorification or denigration of objects.
I meditate without any thoughts of anything.
Artifacts of the three gates rest naturally as they are,
Naturally liberated, just as they arise.
Just as unborn space transcends all partial divisions,
So the natural great perfection should be known.