Cundī dhāraṇī or mantra also to start with appeared inside the Kāraṇḍavyūhasūtra: namaḥ saptānāṃ samyaksaṃbuddha koṭīnāṃ tadyathā oṃ cale cule cunde svāhā "In present-day Theravada practice, mantra exercise is usually coupled with breathing meditation, so that a person recites a mantra concurrently with in-breath and out-breath to help build tranquility https://tantramantraaurvigyaan.com/