He was asked by medical doctors and others, “What is the secret of it?” He said, “We do not know. We only know this, that prana can enter and flow anywhere.” Air cannot penetrate, but prana can penetrate. Once you know that you can suck prana directly, without the container, then you can go into samadhi for centuries even.
By being focused in the third eye, suddenly you can observe the very essence of breath – not breath, but the very essence of breath, prana. And if you can observe the essence of breath, prana, you are at the point from where the jump, the breakthrough happens.
The sutra says,
Let form fill with breath essence to the top of the head…
And when you come to feel the essence of breathing, prana, just imagine that your head is filled with it – just imagine. No need of any effort. I will explain to you how imagination works. When you are focused at the third eye center, imagine, and the thing happens – then and there.
Now your imagination is just impotent; you go on imagining and nothing happens. But sometimes, unknowingly, in ordinary life also things happen. You are imagining about your friend and suddenly there is a knock on the door. You say it is a coincidence that the friend has come. Sometimes your imagination works just like coincidence. But whenever this happens, now try and remember and analyze the whole thing. Whenever it happens that you feel your imagination has become actual, go inside and observe. Somewhere your attention must have been near the third eye. Whenever this coincidence happens, it is not a coincidence. It looks that way because you do not know the secret science. Your mind must have moved unknowingly near the third eye center. If your attention is in the third eye, just imagination is enough to create any phenomenon.
This sutra says that when you are focused between the eyebrows and you can feel the very essence of breathing, let form fill. Now imagine that this essence is filling your whole head, particularly the top of the head, the sahasrar – the highest psychic center. And the moment you imagine, it will be filled. there – at the top of the head – shower as light. This prana essence is showering from the top of your head as light. And it will begin to shower, and under the shower of light you will be refreshed, reborn, completely new. That is what inner rebirth means.
So two things: first, focused at the third eye your imagination becomes potent, powerful. That is why so much insistence has been given on purity. Before doing these practices, be pure. Purity is not a moral concept for Tantra, purity is significant – because if you are focused at the third eye and your mind is impure, your imagination can become dangerous: dangerous to you, dangerous to others. If you are thinking to murder someone, if this idea is in the mind, just imagining may kill the man. That is why there is so much insistence on being pure first.