Agni Yoga disciplines which originated in ancient India. The term "Yoga" has been applied to a variety of practices and methods. In Hinduism these include Jnana Yoga, Bhakti Yoga, Karma Yoga, Laya Yoga and Hatha Yoga. The term "Rāja yoga" originally referred to the ultimate goal of yoga, which is Samadhi (Sanskrit: , ), but was popularised by Swami Vivekananda as the common name for "Ashtanga Yoga". In the Ashtanga Yoga tradition, "Samadhi" is the eighth and final limb identified in the Yoga Sutras of Patanjali. "Aum" or "Oṃ" (Devanagari: ), , is a sacred sound and a spiritual symbol in Hinduism,
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