This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
Islam spreads in South Asia through the Chishti order, a Sufi lineage planted in the subcontinent when Khwaja Muinuddin Chishti arrived at Ajmer around 1192. His arrival fell in the same years that Muhammad of Ghor's forces defeated the last Hindu ruler of Delhi and Qutb al Din Aibak went on to found the Delhi Sultanate in 1206, but the order Muinuddin Chishti planted followed its own separate course from that point on.
The Chishti order spread Islam through the South Asian countryside over the following centuries, working through Sufi teachers, shrines and popular devotion rather than through the Sultanate's court and administration. This atlas records that distinction deliberately: the order's spread ran independently of and alongside the Delhi Sultanate's political reach, a religious movement carried by teachers and their followers into towns and villages the Sultanate's own government did not directly touch, rather than an arm of state policy.
What this changed for Islam's spread was a second channel into South Asian society, reaching populations and regions a purely political conquest could not, and establishing a devotional, Sufi form of Islam whose shrines and teaching lineages would remain central to South Asian Muslim life long after the Delhi Sultanate itself and its early successors had passed from power.