Question: How do you know that the heart centre is open?Sri Chinmoy: When the heart centre is open, you will feel boundless joy, boundless love and boundless purity. The first thing you will have is purity: purity inside you, outside you. You will feel infinite love, boundless love, and this love is absolutely pure. It will be within you and without. Then, you will see joy in everything. Now you are crying for joy, but a day will come when this centre is opened and you will get spontaneous joy from everything. You will look at a flower and get joy, you will look at a child and get joy, you will look at the world and get joy. You will also get peace and the feeling of oneness, universal oneness. If your heart centre is fully open, during meditation you are likely to taste the divine nectar, amrita.
Sri Chinmoy, Kundalini: the Mother-Power, Aum Press, 1973