Mystical allegory prepares the ground for a deep experience; it then leads to “artistic creativity”. In a mystical allegory, the narrator creates the literary work which in a way helps the reader to recreate it. The reader reconstructs the literary work and reaches to a new apprehension; as if; he creates a new work in his imagination and thoughts by himself. Hosein ibn Ali al-Hoseini, the mystic of 7^th century AH, in his book Nuzhat al-Arwah, coextends narrator with reader by using allegory; helping the reader to recognize the hidden themes. The present article, by using content analysis method, tries to answer these basic questions: How has the writer of Nuzhat al-Arwah used allegory; and what are hidden themes and allegories in the book? Also, what characters are in the stories and allegories of the book?