Since a direct public domain link is restricted, here are the specific sources you should search for to find the physical PDF or book:
Outraged by Darika's misdeeds, Lord Shiva opened his fiery third eye, from which Bhadrakali emerged to destroy the demon. The Battle: bhadrakali mahatmyam pdf
The Bhadrakali Mahatmyam holds great spiritual significance for devotees of the goddess Bhadrakali. The text is considered a sacred scripture, providing guidance on the worship and rituals associated with the goddess. Devotees believe that by reciting the Bhadrakali Mahatmyam, they can invoke the goddess's powers, seeking protection from evil and guidance on their spiritual journey. Since a direct public domain link is restricted,