Since the 1990s several caches of New Persian documents have come to light in Afghanistan. These documents, written on paper, are now the most significant sources for understanding how New Persian in Arabic script was used as an administrative and legal language in the eastern Islamic lands between the eleventh and early thirteenth centuries before the Mongol conquest of Khurāsān. After a brief survey of the three main collections in which these New Persian paper documents are preserved today, this article presents a preliminary edition, translation and commentary on one of the New Persian documents held in the Nasser D. Khalili Collection of Islamic Art. The document, dated ah 608/1212 ce, is a record of court proceedings and the decision of a judge (qāḍī) in a lawsuit over water rights initiated by a woman.

The province of Khurāsān constituted the centre of political, cultural, and religious life in the Sunni Islamic world from the ninth until the mid-twelfth century, after which Khurāsān was completely eclipsed. The question of how this occurred has remained almost completely unstudied; and the one study that there is does not consult the key primary literary sources for the time. The purpose of this article, therefore, is to re-examine what the primary sources reveal about the catastrophic cultural and political eclipse of Khurāsān in the mid-twelfth century, in order to demonstrate that this catastrophe was not due to “climate, cotton and camels” – in fact, Khurāsān was doing very well until the 1150s – but to concrete human agency and action: namely, the province's destruction by the rampaging Oghuz Turkmens after Sultan Sanjar had been taken captive by them in 1153, thus leading directly to the downfall of the Great Seljuq Sultanate.