The Khalwatiyya is a major Sufi order named for the practice that stands at the centre of its method, the spiritual retreat, and it became one of the great orders of the Ottoman world.
The khalwa
The order takes its name from the khalwa, the period of solitary retreat in which the disciple withdraws to a cell to fast, pray and remember God under the close direction of the master, and this rigorous individual seclusion is the defining discipline of the tradition. It traces itself to Umar al-Khalwati, who died at the end of the fourteenth century, and it built its whole training around the guided retreat, which made the bond between master and disciple exceptionally close and gave the order a reputation for demanding personal formation.
An Ottoman network of branches
The Khalwatiyya spread across the Ottoman lands, from Anatolia and the Balkans to Egypt and the Arab provinces, and it became one of the most important and widely diffused of all orders, notable for the number of sub-orders that branched from it, each named for the master who founded it. This capacity to generate branches made the Khalwati tradition a vast family rather than a single body, and its influence on the religious life of the Ottoman Empire was correspondingly large. The order continues through its many branches, keeping the retreat that gave it its name as the core of its spiritual practice.