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On February 15, 2021, the Arrukn Media Center, the news outlet of Katiba Al-Mahdi fi Bilad Al-Arakan, a Myanmar-based jihadi group which has pledged allegiance to the Islamic State (ISIS), published a 35-page online book in English. Titled "Khalifatullah Al-Mahdi" the book contains hadiths and discusses Islamic traditions about the Mahdi, a messianic eschatological figure.
The book was posted on the group's Telegram channel, and on the ISIS-operated Rocket.chat. Although Katiba Al-Mahdi fi Bilad Al-Arakan announced its pledge of allegiance to ISIS in November 2020, to date it has not been publicly acknowledged by the central ISIS leadership. In December 2020, the group released the first issue of an English language magazine, and to date there has not been any subsequent issues.
The above image depicts the cover of the new English book published online by Katiba Al-Mahdi fi Bilad Al-Arakan.
The book, which is in color and includes illustrations, is divided into 11 chapters which organize the hadiths according to the way in which their content pertains to the Islamic messianic figure of the Mahdi.
The introduction assures readers that although some of the hadith presented in the book are not considered authentic (Sahih), nonetheless they should be read. The introduction also presents the ISIS Caliphate as the sole heir and leader of true Islam according to the Prophetic methodology, and claims that the organization is paving the way for the coming of Al-Mahdi who will be the last Caliph. The final page of the book encourages readers to translate it into their native languages and disseminate it.
 Telegram.me/ ARRUKN_MEDIA01_BOT, February 15, 2021.
 See MEMRI JTTM Report; Jihadi Group In Myanmar Reportedly Pledges Allegiance To ISIS Leader Abu Ibrahim Al-Hashemi, November 8, 2020.
 See MEMRI JTTM Report: ISIS Branch In Myanmar Publishes First Issue Of Arkan Magazine, December 28, 2020.