Task: Text Categorization
Input (English): In this work, a scribe records that a dead man sells another dead man a house, and this work notes that certain individuals "never tasted the cup of tranquility," advising against the literal interpretation of verses such as "And verily Our host shall conquer. " Hooper Dunbar produced a "companion to the study" of this text, and near the end of its first section, the book addresses the learned of Bayan to not forget its teachings. This book addresses such confusing terms as "Seal of the Prophets" and in one verse explains that backbiting should be treated as an error and that by cleansing and purifying his heart, the knowledge of the Ancient of Days is available to the true seeker. This text was written in two days and two nights in 1861 in Baghdad, where the Bah'u'llh was in exile. For 10 points, name this primary Bah' holy text.
Output (English): Literature