2. Lying Uddeeyaana Bandha Gheranda Samhita, Upadesha-3, Verse: 10

Udare pashchimam taanam Naabheroordhvam tu kaarayet | Uddaanam kurute yasmat Avishraantam mahaakhagaha | Uddeeyaanam tvasau bandhao Mrutyu-Maatanga-Kesaree || 3.10 ||

TRANSLATION

One should contract the bowels above and below the navel so that the abdominal organs touch the back. The one who practices this uddeeyaana bandha continuously becomes a conqueror of death. The great bird (Kundalini) flies up in the Sushumna and flies there itself constantly.