Which of the following statements is not correct regarding Firoz Shah Tughlaq?
Under the Iqta System, the land of the empire was divided into several large and small tracts called Iqta and assigned these Iqtas to his soldiers, officers and nobles. In the beginning, an Iqta was based upon salary. Later, under Firoz Shah Tughlaq it became hereditary. Alauddin Khilji suddenly abolished the system of small Iqtas with a stroke of the pen and brought them under the central Government (thus called Khalsa land). This was regarded as one of the most important agrarian reforms of Alauddin Khilji.