Yoga Sutras of Patanjali at the same time. The Vedanta-Sramana traditions, iconolatry and Vedic rituals can be identified with the Jnana marga, Bhakti marga and the Karma marga respectively that are outlined in the Bhagavad Gita. The "Yoga Sutras" are built on a foundation of Samkhya philosophy, an orthodox (Astika) and atheistic Hindu system of dualism, and are generally seen as the practice while Samkhya is the theory. The influence of Samkhya is so pervasive in the Sutras that the historian Surendranath Dasgupta went so far as to deny independent categorization to Patañjali's system, preferring to refer to it as "Patanjala Samkhya", similar to
Kirtan Hindu scriptures such as the "Bhagavad-gita" where Krishna describes multiple paths to spiritual freedom, including karma marga (way of works), jnana marga (way of knowledge) and bhakti marga (way of loving devotion to god). "Kirtan" relates to the bhakti marga tradition of Hinduism. References to "Kirtan" as a musical recitation are also found in the Bhagavata Purana, an important Vaishnava text. Kirtan is often practiced as a kind of theatrical folk song with call-and-response chanting or antiphon. The ancient sage Narada revered as a musical genius, is called a "kirtankar" (singer of kirtan) in the Padma Purana. The famous story