Explanation:

Mansabdari System was a system introduced by Akbar for military administration and territorial commands (grant and revenue) to sustain parts of army. His experiences led him to conclude that rather than relying in the Irani and Turkish nobles, he should also include the Indian Muslims (Sheikhzadas), Afghans and Rajputs in the Mughal army.
The Mansabdari system was borrowed from the system followed in Mongolia. It was a grading system used by the Mughals to decide rank, salary and military responsibilities. The ranks were divided into two, namely zat and sawar. Zat fixed the personal status of a person and the salary due to him. The sawar rank implied the number of cavalrymen or sawar a mansabdar was required to maintain. For every ten cavalrymen, the mansabdar had to maintain twenty horses.
The mansabdars got their salaries in terms of revenue assignments called jagirs. It was not a resident assignment and the revenue was often collected by the mansabdar’s servants on his behalf while he himself served in some other part of the country.
The Mughal officers whether Hindus or Muslims were granted territorial commands in return for the military service. They had to bring in some fixed number of men-at-arms, horses and elephants to the field and were rated as per the numbers which was known as Zats. So they were called Mansabdars of 10, 20, 100, and 1000 and so on.
Mansingh was the first Mansabdar of 7000 zats and Bhagwan Das with 5000 zats enjoyed the privileged position in the Mansabdari system of Akbar.