Cundī dhāraṇī or mantra also very first appeared inside the Kāraṇḍavyūhasūtra: namaḥ saptānāṃ samyaksaṃbuddha koṭīnāṃ tadyathā oṃ cale cule cunde svāhā "In modern Theravada practice, mantra practice is usually coupled with breathing meditation, to ensure one recites a mantra concurrently with in-breath and out-breath to help establish tranquility and focus. https://www.youtube.com/@Mahavidyabaglamukhi/