This app is intended to introduce and provide greater familiarity with “Borhan ol-Haqq” (Demonstration of the Truth, 1963), the first published work of Nur Ali Elahi (later Ostad Elahi, 1895-1974). This seminal book presents Ostad Elahi’s comprehensive and meticulous research on the origins, beliefs, principles, and tenets of the mystical order of the Ahl-e Haqq, which had never before been systematically compiled and codified. The supplemental articles and expositions by other researchers and scholars in the field provide essential contextual background and additional analyses of Ostad Elahi’s findings.