In 1298–99, a Mongol army (possibly Neguderi fugitives) invaded the Sindh region of the Delhi Sultanate, and occupied the fort of Sivistan in present-day Pakistan.

In February 1298, a Delhi army led by Alauddin Khalji's general Ulugh Khan inflicted a crushing defeat on the Mongols.

[4] The 16th century historian Firishta claims that the invasion was led by Duwa (the ruler of the Chagatai Khanate) and his brother Chaldi (Saldi).

[6] In absence of these reputed generals, Alauddin dispatched Zafar Khan, the governor of Samana, to evict the Mongols from Sivistan.

[2] Despite a barrage of arrows from the Mongols and despite not making use of any siege engines, Zafar Khan's army entered the fort.

[3] According to the Delhi courtier Amir Khusrau, Zafar Khan reclaimed the fort in heavy battles involving melee combats using short ranged weapons like axes, swords, javelins, and spears.