Ashtavakra Gita 18.87 -

Akiñcana and niś-kiñcana are concepts of great import in spiritual pursuit. They describe the Knower’s inner orientation. Kiñcana is one who possesses at least the minimum. Akiñcana does not have even that. Truly, none verily possesses anything at all.

One’s body is not gained or acquired by him. He finds himself with a body. It survives on air, a product none can gain and possess. Air is preserved by nature. The same is true of water, food and nourishment. Sunlight is no different. If all these are not possessions, then can whatever one strives for and gets be his? One who realizes this truth, is an akiñcana, non-possessor.

Knower exults in such non-possessiveness. He is hence ever concern-free, light and easy, doing whatever he feels, like a child.

He has no doubt whatever about himself, the world and the interaction between the two. Outcomes of all actions and interactions are but sukha and duḥkha, the inevitable alternates life brings. Having gone beyond them, with no worry and no clinging to anything whatsoever, he lives and moves unhindered. Doubt is the ultimate hurdle for anyone.

The Knower has no doubt at all, as Mundakopanishad (2.2.9 ) states: “All doubts are dispelled …. when the supreme Truth is known in full”. The Knower thus floats contentedly in the expanse of the Self!

Śrīmad Bhāgavatam (11.14.17 ), Krishna tells Uddhava about the transcendental plane in which the niś-kiñcana, the non-possessor, lives:

Those who have become niś-kiñcanas, not possessing anything, with the mind sufficiently filled with fondness for the Lord, the supreme Reality, are graced with supreme quietitude. Their mind dwells in an exalted level, far above what ordinary people can think of. They naturally become affectionate to all beings in the world, without any distinction whatever.

Their intelligence is no more enveloped by desires. In such a lofty state whatever happiness and comfort they enjoy is emerging from non-expectation. Such non-expectational ecstasy, how can ordinary people think of? It is the inebriation arising from the Supreme Lord.

He continues to say: For one who does not own even the least of anything (an akiñcana), who has self-control, who is peaceful at heart, who is graced well with equal vision, whose mind is saturated with the contentment arising from the Lord, the Self, all directions are overflowing with happiness and comfort (11.14.13 ).

Possession and possessiveness constrict the mind, steeping it in untold discomfort and torment. Non-possession is the key for the superlative delight of the Soul!