Explanation:

- Diwan-i-Mustakharaj: This was responsible for the auditing of expenditures and revenues, especially dealing with arrears of land revenue.

- Diwan-i-Amir Kohi: This department was in charge of agriculture and supervising the improvements in farming methods.

- Diwan-i-Waqoof: Its role was to keep a record of grants and expenditure and ensure the proper allocation and use of endowments.

- Diwan-i-Wizarat: This was the office of the chief minister or prime minister, functioning as a general supervisor over all departments in the royal court of the Delhi Sultanate.