Explanation:

By Aurangzeb’s reign the actual revenue collected was often less than the granted sum. There was  also a huge increase in the number of mansabdars which meant a long wait before they received a jagir. These and other factors created a shortage in the number of jagirs. The term mansabdar  refers to an individual who holds a mansab, meaning a position or rank. It was a grading system used  by the Mughals to fix 
(1) rank,
(2) salary and 
(3) military responsibilities. 
Rank and salary were determined by a numerical value called zat. The higher the zat, the more  prestigious was the noble’s position in court and the larger his salary. The mansabdar’s military  responsibilities required him to maintain a specified number of sawar or cavalrymen. The mansabdar  brought his cavalrymen for review, got them registered, their horses branded and then received  money to pay them as salary.