Bhagavad Gita sings:
वासांसि जीर्णानि यथा विहाय नवानि गृह्णाति नरोऽपराणि ।
तथा शरीराणि विहाय जीर्णा न्यन्यानि संयाति नवानि देही ॥२- २२॥
vāsānsi jīrṇāni yathā vihāya navāni gṛhṇāti naro’parāṇi,
tathā śarīrāṇi vihāya jīrṇāny anyāni sanyāti navāni dehī (22)
“Like a man who puts on new garments after discarding his worn out clothes, the embodied Self, also, casts off tattered bodies and transmigrates into other bodies that are new.’’
The Soul rejects bodies that have been ravaged by old age or some other disease and dresses himself in new apparel just as a man throws away old, torn clothes and puts on new clothes.
The body rests on sanskar, the impressions from action attained
the course of a previous existence.
When the store of sanskar is depleted, the Self discards the body.
If the sanskar is of two days’ duration only,
the body will be on the brink of death on the second day itself.
Beyond sanskar there is not even a single breath of life;
sanskar is the body and the Self assumes a new body
according to his sanskar.
According to the Chandogya Upanishad,
“A man is primarily his will.
As is his will in this life,
so does he become when he departs from it.”
It is the firmness of his will in one life that determines
a man will be in the next.
Man is thus born in bodies that are shaped by his own will.
So death is a mere physical change: the Self does not die.
[Revered Swami Adgadanandji]
As expounded by most revered Gurudev.