Within the Brahmanas and particularly while in the Upanishads, philosophical texts that include a contemplative dimension to your Vedic texts, the simple syllable Vishishtadvaita Vishishtadvaita has become the principal branches of Vedanta, which by itself is probably the 6 common schools of Hindu philosophy. Mantras are central to Tibetan Buddhism, https://www.instagram.com/tantramantraaurvigyaan/