Mahishasura-mardini: the nine-night war
Tale 1 of 4Mahishasura came to the battle laughing. A woman? He sent generals first; they did not return. He sent armies; the lion ate well. Then he came himself, and the war became the tradition's study of shape-shifting evil: buffalo, lion, man, elephant, buffalo again. Brute force turned into cunning into charm into force again, the way real adharma mutates whenever one form is countered.
Durga matched every form without hurry, the texts insisting on her leisure: she sipped from her cup between clashes, smiled at his transformations, and let him exhaust his repertoire. Then, as he half-emerged from the buffalo one final time, neither one shape nor another, evil caught in its own transition, her foot pinned him, and the trident ended nine nights of war in one strike. Vijayadashami, the tenth day, is that strike's anniversary: the festival's whole message is that evil's shape-shifting has a last day.
Told in: Devi Mahatmya, Markandeya Purana




