Devi-Mahatmya. Markandeya Purana

"Devi-Mahatmya" (literally "Praise of the Goddess") is a work that is the first in authority among Shaktas, devotees of the Great Goddess of Hinduism, and ranks among the most well-known works in Sanskrit. "Devi-Mahatmya" is part of the "Markandeya Purana," but is essentially an independent text.
The popularity of the Mahatmya is evidenced by the fact that to this day in India, in sacred places associated with the cult of the Goddess, its verses are recited every day. The significance of the work lies in the fact that it is here that the concept of a single Great Goddess first appears, to whom all other female deities and indeed all female beings are considered her particular manifestations. The plot of the work unites three main myths about the manifestations and exploits of the Goddess: the battle with the Asuras Madhu and Kaitabha, the fight with the buffalo demon Mahisha, and the war between the Goddess and the Asura brothers Shumbha and Nishumbha.
Eight traditional Sanskrit commentaries were used in the translation of "Devi-Mahatmya."