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,
Vedas and "Know your Ātman" their thematic focus. The Upanishads are the foundation of Hindu philosophical thought and its diverse traditions. Of the Vedic corpus, they alone are widely known, and the central ideas of the Upanishads have influenced the diverse traditions of Hinduism. "Aranyakas" are sometimes identified as "karma-kanda" (ritualistic section), while the Upanishads are identified as "jnana-kanda" (spirituality section). In an alternate classification, the early part of Vedas are called Samhitas and the commentary are called the Brahmanas which together are identified as the ceremonial "karma-kanda", while "Aranyakas" and "Upanishads" are referred to as the "jnana-kanda". The Vedangas developed