Cundī dhāraṇī or mantra also first appeared during the Kāraṇḍavyūhasūtra: namaḥ saptānāṃ samyaksaṃbuddha koṭīnāṃ tadyathā oṃ cale cule cunde svāhā "In modern day Theravada observe, mantra observe is commonly combined with respiration meditation, to make sure that one particular recites a mantra at the same time with in-breath and out-breath https://tantramantraaurvigyaan.com/