Chach and Dahir
Chach took the throne of Sindh, in ancient India (modern-day Pakistan), around 632 CE and was succeeded, after his brother's reign, by his son Dahir. The kingdom covered the Indus valley from the Punjab borders to the sea, with a coastal fortress-port at Debal.
The Chachnama's account of the reign emphasises tensions between the Brahman rulers and the substantially Buddhist population, and reports that some Buddhist communities did not resist the invaders. How much of this reflects the situation in 712 and how much the concerns of a thirteenth-century Persian author is a real question.
712
The stated pretext for the invasion was the seizure by pirates, off Debal, of ships carrying gifts and pilgrims from Sri Lanka to the Umayyad governor of Iraq, al-Hajjaj. After two failed expeditions, al-Hajjaj sent his young kinsman Muhammad bin Qasim with a well-equipped force including siege engines. Debal fell, then Nerun and Brahmanabad; Dahir was defeated and killed near Rawar in 712, and Multan was taken the following year.
The settlement that followed is historically significant beyond Sindh. The conquerors extended to Hindus and Buddhists the status of protected people, dhimmi, previously applied to Jews, Christians and Zoroastrians, allowing the practice of their religions on payment of the jizya. That accommodation, made as a practical necessity by a small conquering force, became the model for the treatment of non-Muslim subjects across the Islamic world's Indian frontier for the next thousand years.
Afterwards
Sindh remained under Arab governors and then under local Muslim dynasties — the Habbaris at Mansura and the Ismaili rulers of Multan. The Arab advance eastward was checked by the Pratihāras, Chalukyas and Rāṣṭrakūṭas within a few decades, and Sindh remained a frontier province rather than a bridgehead.
Dahir's defeat has been narrated in very different registers — as the opening of India to Islam, as a tragedy of Rajput valour, as a footnote to Umayyad expansion. The contemporary evidence is thin enough that each of these readings depends heavily on the reader.
Further reading
- Coedes, George. The Indianized States of Southeast Asia. University of Hawaii Press, 1968
- Hawley, John Stratton. A Storm of Songs: India and the Idea of the Bhakti Movement. Harvard University Press, 2015
- Samuel, Geoffrey. The Origins of Yoga and Tantra. Cambridge University Press, 2008
- Sen, Tansen. Buddhism, Diplomacy, and Trade. University of Hawaii Press, 2003
- Wink, Andre. Al-Hind: The Making of the Indo-Islamic World. Brill, 1990
See also
This entry was last revised on 1 August 2026.