The Devi Puranas state that Durga is the warrior manifestation of Goddess Adishakti. Durga means the "Invincible One". Therefore, Goddess Adishakti is the Divine Mother of the Universe who had taken birth on Earth as Parvati to win and woo Shiva. The Lalita Sahasranamam bestows Durga as a name of her indicating that Lalita is none other than a form of Ma Adishakti Parvati.

Armed with celestial weapons gifted by the deities and decked with divine ornaments, Durga rode into the battle field and challenged the demons for battle. Mahishasura's entire army, led by demons like Chikshur, Chamar, Asiloma, Vidalaksha, Durdhara, Durmukha, Mahahanu and many more, attacked Durga simultaneously. But Durga slew all of them with unparalleled fearlessness. An enraged Mahishasura attacked Durga in the guise of a buffalo. But Durga bound him in this form with ropes. The buffalo then morphed into a lion and leapt on Durga, but she beheaded it with her sword. At this, Mahishasura began to fight with his sword. Durga pinned him down with a torrent of arrows. Mahishasura assumed the form of a giant elephant and tugged at Durga's mount, itself a lion. Durga lopped off the trunk of the elephant with her sword and freed her lion. The elephant turned into a buffalo and charged at Durga. Durga flung her trident and beheaded Mahishasura, finally killing him.