The Book of the Kosst Amojan is an ancient Bajoran religious text detailing the knowledge of the Pah-wraith. The book is considered highly dangerous, and its viewing is restricted to the Kai alone, as it contains detailed instructions on how to release the Pah-wraith from their imprisonment in the Fire Caves of Bajor.
In 2375, Kai Winn Adami, under coercion from Dukat (disguised as a Bajoran farmer, Anjohl Tennan), requested the book from the archives, intending to use it to free the Pah-wraith. When opened, the book was devoid of text, which was only revealed when blood was spattered across its surface. (DS9: "The Changing Face of Evil")
The restriction on reading the Kosst Amojan was enforced by the book itself. When Dukat attempted to decipher the text, the book released a plume of energy that blinded him for several days. (DS9: "When It Rains...")
Winn and Dukat took the text to the Fire Caves, and were in the process of releasing the Pah-wraith when they were stopped by the Emissary of the Prophets, Benjamin Sisko. The book was destroyed in the ensuing struggle, consumed by the fires of the Pah-wraith. (DS9: "What You Leave Behind")
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