Abstract
Many of the Mashaikh (Spiritual Leaders)of the Sub-Continent, who were also the great scholars of their times, not only guided the masses through words but also by letters written to different people on different subjects. The letters included their relatives, followers, contemporary scholars, nobles and the emperors. In their letters they wrote about training, guidance, reformation, awakening, admonition and different facts of morality and Sufism. Many collections of such epistles are found today too. Some of them are published while some are still in the form of manuscripts .This article gives a short historical analysis of these letters. Firstly, a short introduction of the relevant author is given which includes their lineage, region, era, education and rank in the society. An overview of their literary work follows their introduction. At the end their letters/epistles are briefly mentioned. This historical analysis only includes the writings of the religious scholars after the advent of Aslam in the Sub-Continent (712AD93H).During the reigns of Delhi estate (1206-1554AD/602-962H) and Mughal Destiny (1526-1857AD/932-1257H).