When the universe in which you exist itself is illusory then the birth and death that happens within the illusory universe are bound to be illusory. +

Q:~H O J:~ Santthosh Kumaar what leaves the body when we die?... In my opinion its Soul/consciousness. please elaborate

Santthosh Kumaar:~Suppose if you had asked the same question in a dream, the dream becomes unreal when waking takes palace. Similarly, the waking becomes unreal when Advaitic wisdom dawns. The Advaitic wisdom dawns when you realize the ‘Self’ is not you but the ‘Self’ is the Soul, which is present in the form of the consciousness.

From the Standpoint of the Soul, the Self the world in which you exist is merely an illusion. Thus, all the happening within the illusion is bound to be an illusion. Until ignorance is there, the world in which you exist prevails as a reality.

When ignorance vanishes through Advaitic wisdom then the world in which you exist which you think as reality becomes an illusion.

Remember: ~

You, your body, and the universe in which you are born and going to die are created out of single clay and that single clay is the Soul or consciousness.

Soul, the Self is unborn eternal. The Soul has neither birth nor death because it is ever formless, timeless, and spaceless existence.

It is foolish to discuss birth and death, which is the part and parcel of the illusory universe, or Maya in Atmic discussion, which is based on the Soul, the Self, which is unborn eternal.

Prior to birth (illusory universe), there was only consciousness. After the death (illusory universe) only consciousness will prevail as eternal existence.

Sage Goudapada quotes from the Upanishads: ~ "There's no plurality here"; "The Soul through its powers appears to be many"; "those who are attached to the creation or production or origination go to utter darkness"; "the unborn is never reborn, for what can produce it?”

Sage Goudapada’s rational exposition of Advaita:~ Whatever is seen, whether external or internal, whether by the ordinary persons or yogis, is unreal.

Thus, whatever you have seen, known, believed, and experienced as a person within the waking experience is bound to be an illusion created out of consciousness. Thus, the Soul, which is present in the form of consciousness alone, is real and eternal.

When the universe in which you exist itself is illusory then the birth and death that happens within the illusory universe are bound to be illusory. 

Consciousness is ever-present. Without consciousness, the world, in which you exist ceases to exist. Consciousness is Self-evident. It is not established by extraneous proofs. It is not possible to deny consciousness, because it is the very essence of the one who denies it. Consciousness is the basis of all kinds of knowledge, presuppositions, and proofs. Consciousness is everything. Thus, consciousness is the ultimate truth or Brahman or God in truth. : ~ Santthosh Kumaar