Cundī dhāraṇī or mantra also to start with appeared in the Kāraṇḍavyūhasūtra: namaḥ saptānāṃ samyaksaṃbuddha koṭīnāṃ tadyathā oṃ cale cule cunde svāhā For Conze, the final phase of the development of Buddhist mantras will be the tantric period of Mantrayana. With this tantric section, mantras are at the really center https://www.instagram.com/tantramantraaurvigyaan/