O Rama, two aspects of the “heart” are spoken of here: one is acceptable and the other is to be ignored. The heart that is part of this physical body and is located in one part of the body may be ignored!
The heart which is acceptable is of the nature of pure consciousness. It is both inside and outside and it is neither inside nor outside. This is the principal heart and in it is reflected everything which is in the universe, and it is the treasure-house of all wealth.
Consciousness alone is the heart of all beings, not the piece of flesh which people call the heart!