Its beliefs and practices , especially the concepts of Bhakti and Bhakti Yoga , are based largely on the `` Upanishads '' , and associated with the `` Vedas '' and Puranic texts such as the `` Bhagavad Gita '' , and the `` Padma Purana '' , `` Vishnu Purana '' and `` Bhagavata Purana '' .
Its beliefs and practices , especially the concepts of Bhakti and Bhakti Yoga , are based largely on the Upanishads , and associated with the Vedas and Puranic texts such as the Bhagavad Gita , and the Padma , Vishnu and Bhagavata Puranas .