The final step in Ashtanga Yoga is the attainment of samadhi. When we succeed in becoming so absorbed in something that our mind becomes completely one with it, we are in a state of samadhi. Samadhi means "to bring together, to merge". In samadhi our personal identities completely disappear. At the moment of samadhi none of that exists anymore. We become one with the Divine Entity.
During samadhi, we realize what it is to be an identity without differences, and how a liberated soul enjoys a pure awareness of this pure identity. The conscious mind drops back into that unconscious oblivion from which it first emerged. The final stage terminates at the instant the soul is freed. The absolute and eternal freedom of an isolated soul is beyond all stages and beyond all time and place. Once freed, it does not return to bondage.
The perfection of samadhi embraces and glorifies all aspects of the self by subjecting them to the light of understanding. The person capable of samadhi retains his/her individuality and person, but is free of the emotional attachment to it.