The Hatha Yoga Pradipika (Sanskrit: Haṭhayoga Pradīpikā, हठ योग प्रदीपिका) is a classic Sanskrit manual on hatha yoga, written by Svami Svatmarama, a disciple of Swami Gorakhnath. Said to be the oldest surviving text on the hatha yoga, it is one of the three classic texts of hatha yoga, the other two being the Gheranda Samhita and the Shiva Samhita.
The text was written in 15th century CE. The work is derived from older Sanskrit texts and Swami Svatamarama’s own yogic experiences. Many modern English translations of the text are available.
The book consists four Upadeśas (chapters) which include information about asanas, pranayama, chakras, kundalini, bandhas, kriyas, shakti, nadis and mudras among other topics. It runs in the line of Hindu yoga (to distinguish from Buddhist and Jain yoga) and is dedicated to Lord Adinatha, a name for Lord Shiva (the Hindu god of destruction and renewal), who is believed to have imparted the secret of hatha yoga to his divine consort Parvati.
In his thesis on Trul Khor which he renders into English as ‘magical movements’, a himalayan form of body discipline or yoga, Chaoul (2006: p. 52), states that White and Eliade hold that the Hatha Yoga Pradipika was influenced by Buddhism, particularly Madhyamaka or ‘Middle Way’.
Definition courtesy Wikipedia.