In Ibāḍī Texts from the 2nd/8th Century Abdulrahman Al-Salimi and Wilferd Madelung present an edition of fourteen Ibāḍī religious texts and explain their contents and extraordinary source value for the early history of Islam. The Ibāḍīs constitutes the moderate wing of the Kharijite opposition movement to the Umayyad and ‘Abbasid caliphates. The texts edited are mostly polemical letters to opponents or exhortatory to followers by ‘Abd Allah b. Ibad , Abu l-‘Ubayda Muslim b. Abi Karima and other Ibadi leaders in Basra, Oman and Hadramawt. An epistle detailing the offences of the caliph ‘Uthman is by the early Kufan historiographer al-Haytham b. ‘Adi. By their early date and independence of the mainstream historical tradition these txts offer the modern historian of Islam an invaluable complement to the well-known literary sources.