Cundī dhāraṇī or mantra also very first appeared during the Kāraṇḍavyūhasūtra: namaḥ saptānāṃ samyaksaṃbuddha koṭīnāṃ tadyathā oṃ cale cule cunde svāhā Mantras may possibly not directly erase negative karma, Nonetheless they will help you in generating favourable mental states and intentions, which can influence your actions and their repercussions. Try https://www.youtube.com/@AacharyaGoldieMadan/