The Indestructible, the Supreme, is Brahman.
What is the self? – Svabhava (one’s own self, the jivatman,
the Atman dwelling in the jiva, the Indwelling One) is the adhyatman.
The creative force that brings beings into existence is
called karma.
That which underlies all created things is the perishable
nature.
That which underlies the gods is the cosmic spirit.
And, Arjuna, in this body I Myself (as the inner witness) am
Adhiyagna.
He who casting off the body, goes forth, meditating upon me
along, at the hour of death, he attains to my state. There is no doubt about
it.
A person who abandons all thought and meditates upon the Supreme Truth at the hour of death reaches the Supreme Truth.
He who departs from the body thinking of Supreme Truth enters the imperishable Brahman.
Therefore at all times think of Supreme Truth and do your Karma. When the mind and understanding are set on Brahman, we go to That.
He whose mind does not wander and is constantly meditating on the Supreme Truth attains the Supreme Truth.