Hatha yoga aim of spiritual liberation, self-knowledge or release from rebirth that the Indian traditions call "mukti" or "moksha". The goals of Hatha yoga, in its earliest texts, were linked to "mumukshu" (seeker of liberation, moksha). The later texts added and experimented with the goals of "bubhukshu" (seeker of enjoyment, bhoga). Hatha yoga is a branch of yoga. It shares numerous ideas and doctrines with other forms of yoga, such as the more ancient Yoga system taught by Patanjali. The differences are in the addition of some aspects, and different emphasis on other aspects. For example, "pranayama" is crucial in all yogas,
Aparoksha from which unity of existence is derived. This knowledge is gained by establishing a "guru-shishya sambandha" (Guru-shishya tradition) with a teacher who has already experienced that kind of knowledge (Aparoksanubhuti); the karma or acts required to be done, after gain of "Aparoksha jnana" is "Vidya-karma" which consists in "sravana" (hearing of srutis), "manana" (reflection) and "nididhyasana" (meditation on Brahman). Aparoksha is "savikalpa jnana" (knowledge) when one re-recognizes the non-dual nature of the ever-realized Self (Tat Tvam Asi), it is the immediate knowledge gained through the "pramanas"; practice of "Dhyana" (meditation) removes all "vikalpas" (varied thoughts) and leads to "nirvikalpa" or