Mantras are only endowed with transformative electrical power if presented in initiation (dīkṣa) in the mouth of a Expert. It is not much correct pronunciation, but fairly the ability with which the mantra is endowed that offers it reworking ability. Cundī dhāraṇī or mantra also initially appeared inside the Kāraṇḍavyūhasūtra: https://laxmi41616.bloggactivo.com/36211662/baglamukhi-an-overview