Mistaking the spiritual heart within the physical body is a great error.+

Sage Sri, Ramana Maharshi: ~ He placed his right hand on his right breast and continued, "Here lies the Heart, the dynamic, spiritual Heart. It is called Hridaya and is located on the right side of the chest and is clearly visible to the inner eye of an adept on the spiritual path. Through meditation, you can learn to find the Self in the cave of this Heart." ~ Mercedes de Acosta, Here Lies the Heart

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Santthosh Kumaar: ~ “The spiritual heart is the invisible Soul, the Self, not the physical heart. The world in which we exist is created out of the invisible Soul, the Self, which is the spiritual heart. Mistaking the spiritual heart within the body is a great error.

Even some Advaitic Gurus say that the Self is within the spiritual heart. And the spiritual heart is on the left side. Such a declaration is merely an imagination, based on the false self.

When the Self is not you but the invisible Soul, which is bodiless, then the question of the heart being left-sided or right-sided does not arise.

The seeker must realize that the invisible and unborn Soul, the Self, itself is the spiritual heart. The invisible Soul, the spiritual heart, is ever ever-formless, timeless, and spaceless existence. The invisible Soul is present in the form of the Spirit or consciousness.

Without the form, time, and space, the invisible Soul, the Self, becomes naked without form and attributes. The nature of the invisible and unborn Soul, the Self, is nondual because it is an ever-formless, timeless, and spaceless existence. : ~ Santthosh Kumaar