This English edition of the correspondence of Khwāja 'Ubayd Allāh Aḥrār, the fifteenth-century Central Asian Naqshbandī Sufi shaykh, and his associates provides surprising new insights into the sociopolitical and economic history of premodern Central Asia and the influential roles of Sufi leaders of the time. It contains the extraordinary collection of autograph letters from the Majmū'a-yi murāsalāt, a unique manuscript housed at the Institute of Oriental Studies in Tashkent, Uzbekistan, with petitions to the Timurid court at Herat. The letters...