Bhakti yoga (Sanskrit: भक्ति योग), also called Bhakti marga (भक्ति मार्ग, literally the path of Bhakti), is a spiritual path or spiritual practice within Hinduism focused on loving devotion towards any personal deity. It is one of the three classical paths in Hinduism which lead to Moksha, the other paths being Jnana yoga and Karma yoga. The tradition has ancient roots. Bhakti is mentioned in the Shvetashvatara Upanishad where it simply means participation, devotion and love for any endeavor. Bhakti yoga as one of three spiritual paths for salvation is discussed in depth by the Bhagavad Gita.