Answer : 2. "इब्राहीम गार्दी"
Explanation :

1. The Muslim commander who died fighting on behalf of the Marathas in the Third Battle of Panipat was Ibrahim Gardi.

2. The Third Battle of Panipat took place on 14 January 1761, about 60 miles (95.5 km) north of Delhi, between the Northern Expeditionary Force of the Maratha Empire and a coalition of two Indian Muslims, led by King Ahmad Shah Durrani of Afghanistan.

3. The decline of the Mughal Empire following the Mughal–Maratha War (1680–1707) led to rapid territorial gains for the Maratha Empire.