Analysis of information sources in references of the Wikipedia article "سلطان محمود غزنوی" in Persian language version.
In 1026, warriors of the Jats, the indigenous population of Sindh, inflicted heavy losses on Mahmud's army when he retreated from Somnath to Multan. Mahmud returned a year later to take revenge on the Jats, who had been stubbornly resisting forced Islamisation since the eighth century. As the contemporary writer Gardizi reports, Mahmud had 1,400 boats built; each boat was to carry 20 archers and be equipped with special projectiles that could be filled with naphtha. Mahmud's fleet sailed down the Jhelum and then the Indus, until it met the Jat fleet. Although the Jats had far more boats than Mahmud, their fleet was set ablaze and destroyed.
