Cundī dhāraṇī or mantra also 1st appeared in the Kāraṇḍavyūhasūtra: namaḥ saptānāṃ samyaksaṃbuddha koṭīnāṃ tadyathā oṃ cale cule cunde svāhā The Durga Gayatri mantra is devoted to Goddess Durga, celebrated for her energy and protective power. This can be said to get the world most powerful mantra chanted by Hindus https://www.instagram.com/tantramantraaurvigyaan/