Cundī dhāraṇī or mantra also initially appeared during the Kāraṇḍavyūhasūtra: namaḥ saptānāṃ samyaksaṃbuddha koṭīnāṃ tadyathā oṃ cale cule cunde svāhā For Conze, the ultimate stage of the development of Buddhist mantras is the tantric period of Mantrayana. With this tantric stage, mantras are within the pretty Heart of the path https://www.youtube.com/@AacharyaGoldieMadan/