Cundī dhāraṇī or mantra also to start with appeared in the Kāraṇḍavyūhasūtra: namaḥ saptānāṃ samyaksaṃbuddha koṭīnāṃ tadyathā oṃ cale cule cunde svāhā Nirguna mantras, derived from historical Vedic texts, are more mature than any of the three types. Nirguna mantras will not contact upon any distinct deity or personalised attribute https://www.youtube.com/@Mahavidyabaglamukhi/