From Vijnana Bhairava Tantra
Sources of Translations used here~
Paul Reps ~ http://home.primusonline.com.au/peony/112_meditations.htm
Daniel Odier ~ http://www.danielodier.com/english/envijnana.php
Osho ~ http://www.meditationiseasy.com/mCorner/techniques/Vigyan_bhairav_tantra/Meditation_techniques_index.htm
Vijnana Bhairava Tantra has been called the Esoteric Teaching for the Direct Knowledge of Pure Consciousness. The text is said to be over 5000 years old, but who knows. It takes the form of a conversation between Shiva and Shakti. It outlines 112 meditations, and is often surprisingly modern.
MEDITATION NUMBER 1.
Radiant One, this experience may dawn between two breaths.
After breath comes in (down)
and just before turning up (out) - the beneficence.
The supreme Shakti reveals herself when inbreath and outbreath are born and die at the two extreme points, top and bottom. Thus, between two breaths, experience infinite space
After breath comes in -- that is, down -- and just before turning out -- that is, going up -- the beneficence Be aware between these two points, and the happening. When your breath comes in, observe. For a single moment, or a thousandth part of a moment, there is no breathing -- before it turns up, before it turns outward. One breath comes in; then there is a certain point and breathing stops. Then the breathing goes out. When the breath goes out, then again for a single moment, or a part of a moment, breathing stops. Then breathing comes in. Before the breath is turning in or turning out, there is a moment when you are not breathing. In that moment the happening is possible, because when you are not breathing you are not in the world.
If you can feel the gap, Shiva says, the beneficence.
Then nothing else is needed. You are blessed, you have known; the thing has happened. You are not to train the breath. Leave it just as it is.