Beginnings of Islamic rule in India

Background: The Arab Foothold in Sindh (711-c. 854)

The first sustained Muslim political presence in the Indian subcontinent followed the Umayyad conquest of Sindh, when Muhammad bin Qasim defeated and killed Raja Dahir near Aror around 712 CE (see Battle of Aror). Arab, and later semi-independent Muslim, rule persisted in Sindh for well over a century, eventually centered on the cities of Multan and Mansura under the Habbarid dynasty from around the mid-ninth century. This remained a regional foothold on the northwestern frontier rather than a springboard for deeper conquest; nearly three centuries passed before Muslim rule extended significantly further into the subcontinent.

The Ghaznavid Raids (c. 1000-1027)

Mahmud of Ghazni, a Turkic ruler based at Ghazni in present-day Afghanistan, launched a series of roughly seventeen campaigns into northern India between 1000 and 1027. These were chiefly plundering expeditions against the Hindu Shahi rulers of the Kabul-Punjab frontier, Jayapala and his successor Anandapala, and against wealthy temple towns further afield, rather than attempts at sustained territorial annexation beyond Punjab. The most notorious of these was the 1025 raid on the Somnath temple in Gujarat, an episode described, with considerable later literary embellishment, in Persian chronicles such as al-Utbi's Tarikh-i-Yamini. The wealth extracted from these campaigns helped fund a major Persianate court culture at Ghazni, which patronized figures including the poet Firdausi and the scholar al-Biruni, whose Kitab al-Hind remains an important near-contemporary account of Indian society and science. Ghaznavid conquest left a lasting Muslim garrison presence in Punjab, centered on Lahore, that outlasted the dynasty's power elsewhere.

The Ghurid Conquest and the Founding of the Delhi Sultanate (1173-1206)

Sustained territorial rule over the Gangetic plain came only with the Ghurid dynasty, based at Ghor in central Afghanistan. Muhammad of Ghor was initially defeated by Prithviraj Chauhan of the Chahamana (Chauhan) dynasty of Ajmer-Delhi at the First Battle of Tarain in 1191, but returned the following year to win the Second Battle of Tarain (1192), in which Prithviraj was killed or captured. Ghori's general Qutb-ud-din Aibak subsequently extended control over Delhi and the upper Gangetic plain, while another commander, Bakhtiyar Khalji, advanced into Bihar and Bengal, a campaign traditionally associated with the destruction of the Buddhist monastic university of Nalanda, though the precise date, extent, and circumstances of that event remain debated among historians. Following Ghori's assassination in 1206, Aibak, ruling from Delhi and Lahore, established the Mamluk (Slave) dynasty, conventionally taken as the founding of the Delhi Sultanate.

The Delhi Sultanate (1206-1526)

Five dynasties ruled the Delhi Sultanate in succession: the Mamluk or Slave dynasty (1206-90), the Khilji dynasty (1290-1320), the Tughlaq dynasty (1320-1414), the Sayyid dynasty (1414-51), and the Lodi dynasty (1451-1526). Iltutmish, the Mamluk sultanate's most effective early ruler, consolidated control over North India and secured formal recognition from the Abbasid Caliph; his daughter Razia Sultana briefly ruled in her own right from 1236 to 1240, an unusual instance of a woman heading the sultanate. Alauddin Khilji (r. 1296-1316) repelled repeated Mongol invasions of North India, extended Sultanate authority into the Deccan through his general Malik Kafur, and imposed an extensive system of market price controls. Muhammad bin Tughlaq (r. 1325-51) attempted an ambitious and ultimately failed transfer of the capital to Daulatabad in the Deccan and introduced a token currency that led to economic disruption. Much of what is known about Sultanate-era administration, including its taxation of non-Muslims through the jizya, comes from Ziauddin Barani's Tarikh-i-Firuz Shahi and Firuz Shah Tughlaq's own memoir, the Futuhat-i-Firuz Shahi. In 1398, the Central Asian conqueror Timur sacked Delhi, devastating the city and leaving the Tughlaq dynasty terminally weakened; the subsequent Sayyid and Lodi dynasties ruled a reduced and contested sultanate, checked by regional powers including the Vijayanagara Empire, the Bahmani Sultanate, various Rajput states, and the independent sultanates of Bengal and Gujarat, until Ibrahim Lodi's defeat by Babur at the First Battle of Panipat in 1526 (see Battles of Panipat).

Regional Sultanates

Delhi's authority over the wider subcontinent was never absolute, and as central control weakened, particularly after Timur's 1398 sack, a number of regional Muslim sultanates emerged and endured independently for centuries. The Bengal Sultanate, effectively independent from the mid-fourteenth century, developed its own distinctive architectural and literary culture. The Bahmani Sultanate, founded in the Deccan in 1347, ruled much of central India for over a century before fragmenting in the late 1400s and early 1500s into five successor states, Bijapur, Golconda, Ahmadnagar, Bidar, and Berar, collectively known as the Deccan sultanates, which in turn contended with the Hindu Vijayanagara Empire to their south for the next two centuries. Independent sultanates also arose in Gujarat, Malwa, Jaunpur, and Kashmir during the fifteenth century, so that "Islamic rule" in this period describes not a single centralized authority but a shifting patchwork of competing Muslim and Hindu polities across the subcontinent.

Religious and Administrative Policy

Policy toward non-Muslim subjects varied considerably across rulers and periods rather than following a single uniform pattern. The jizya tax on non-Muslims was levied under many sultans, though not continuously or uniformly across the Sultanate's history; some rulers extended patronage to Hindu officials, scholars, and temples, while conquest campaigns were often accompanied by the destruction of temples closely tied to a defeated ruler's political authority. The historian Richard Eaton's survey of contemporary inscriptional and chronicle evidence identifies several dozen well-documented instances of temple destruction across the Sultanate and Mughal periods, generally linked to specific military campaigns and assertions of political sovereignty over rival capitals, rather than to a single empire-wide religious edict. Historians likewise attribute the growth of Muslim populations across South Asia in this period to a combination of factors, including the settlement of Turkic, Afghan, and Central Asian military and trading communities, the missionary activity of Sufi orders such as the Chishti and Suhrawardi silsilas, and conversions shaped by local political and economic circumstance, rather than to any single cause.

Founding of the Mughal Empire (1526)

Babur's victory at the First Battle of Panipat in 1526 ended the Delhi Sultanate and inaugurated Mughal rule, which expanded under his successors, Humayun, Akbar, Jahangir, Shah Jahan, and Aurangzeb, to cover most of the subcontinent by the late seventeenth century. Religious policy again varied widely by ruler: Akbar abolished the jizya and experimented with interfaith dialogue through his court initiative known as Din-i-Ilahi, while Aurangzeb reimposed the tax in 1679 and pursued more restrictive policies later in his reign, including the demolition of a small number of prominent temples, among them the Kashi Vishwanath temple at Varanasi and the Keshava Deo temple at Mathura, and the 1675 execution of the ninth Sikh Guru, Tegh Bahadur.

Historiography

Knowledge of this seven-century span rests on Persian- and Arabic-language court chronicles, including the Chach Nama for Sindh, the Tarikh-i-Yamini for the Ghaznavids, the Tabaqat-i-Nasiri and Tarikh-i-Firuz Shahi for the Sultanate, and the Baburnama, Akbarnama, and Alamgirnama for the Mughals, supplemented by inscriptions, coinage, and the accounts of travelers such as al-Biruni and Ibn Battuta. Modern historians differ substantially in how they weigh this material, particularly regarding the scale of violence involved in specific campaigns, the causes and extent of religious conversion, and the degree of continuity versus rupture in administrative and social institutions across the period. These debates remain active in both academic and popular historical writing about the era.