Reasons he didn't invade India.

So the theory goes,

"He just didn't wanted to make the people of india suffer more due to war, cus they were already suffering enough under mugal sultanate."

The war would have bought more Havoc among people.

He refused to invade india and spill blood on the pious land that gave birth to Hinduism and Buddhism.

No doubt there are significant similarities in Mongolian and Indian culture to this day.