Devi Sarva Bhuteshu Is Which Mantra - Ya

The verse is not a single mantra in the Vedic sense (like Gayatri or Mahamrityunjaya), but a famous śloka (hymn) from the Devi Mahatmyam (also known as Durga Saptashati or Chandi Path ), specifically from the "Ya Devi" section (Chapter 5, verses 8–10, often recited as an Aarti or Prarthana ).