Mahamudra meditation was given by Osho in his talks on the Tantric master, Tilopa (Tantra: The Supreme Understanding) who is regarded as the founder of the Kagyu lineage of Tibetan Buddhism.
The meditation consists of two stages. The first is Latihan, in which the meditator allows his/her body to move in accordance with the universal energy. The second stage is Prayer, in which the meditator becomes a channel: talking energy from the sky, pouring it into the earth.
Osho says, if this meditation is done regularly for about three months, the meditator can experience a state of dissolution into existence, known as Mahamudra, The Great Orgasm.