According to the narrative from the Devi Mahatmya of the Markandeya Purana, the form of Durga was created as a warrior goddess to fight a demon. The demon’s father Rambha, king of the demons, once fell in love with a water buffalo, and Mahish Asur (the demon Mahish) was born out of this union. He is therefore able to change between human and buffalo form at will (mahish means “buffalo”). Through intense prayers to Brahma, Mahishasur had the boon that he could not be defeated by any man or god. He unleashed a reign of terror on earth, heaven and the nether worlds.
Eventually, since only a woman could kill him, the Holy Male Trinity bestowed a dazzling beam of energy upon their own consorts, transforming them into one generic goddess, Durga.
The Great Goddess is said to be exquisitely beautiful. Her form is blindingly bright, with three lotus-like eyes, ten powerful hands, lush hair with beautiful curls, a red-golden glow from her skin and a quarter moon on her forehead. She wears a shiny oceanic blue attire emitting fierce rays. Her ornaments were carved beautifully of gold, with ocean pearls and precious stones embedded in it. Her face was sculpted by Shiva, torso by Indra, breasts by Chandra (the moon), teeth by Brahma, bottom by the Earth, thighs and knees by Varuna (water), and her three eyes by Agni (fire). Each god also gave her their own most powerful weapons, Rudra’s trident, Vishnu’s discus, Indra’s thunderbolt, Brahma’s kamandal, Kuber’s gada, etc. Himalayas gifted her a fierce whitish golden lion. On the end of the 8th and beginning of the 9th day of waxing moon, Chanda and Munda came to fight the goddess. She turned blue with anger and goddess Chamunda leaped out of her third eye. Her form was the most powerful one with 3 red eyes, blood-filled tongue and dark skin; who finally killed the twin demons with her sword. This form of the divine goddess is worshipped during the sandhikshan of Durga Puja festival, as sandhi/chandi puja. Finally on the tenth day of waxing moon, goddess Durga killed Mahishasura with her trident.
Goddess Durga is said to be the mother of Ganesha, Kartikeya as well of Saraswati and Lakshmi.
- sourced from wikipedia