Alauddin Khalji's Policies:
Alauddin Khalji implemented several measures to keep a check on the iqtadars, who were powerful feudal lords.

- Centralization of Power: He centralized power by reducing the influence of the nobles and iqtadars. He appointed his loyal officers in key positions to keep a check on the iqtadars.
- Regular Inspections: Alauddin Khalji conducted regular inspections of the iqtadars to ensure they were not abusing their power or exploiting the peasants.
- Revenue Reforms: He introduced various revenue reforms to increase the state's revenue and reduce the dependence on the iqtadars for resources.
- Military Reforms: Alauddin Khalji strengthened the military and created a separate department to oversee the recruitment, training, and deployment of soldiers, reducing the iqtadars' control over the army.

Mohammad Tughlaq's Policies:
Mohammad Tughlaq also implemented several measures to keep a check on the iqtadars during his reign.

- Token Currency: He introduced token currency to control the economy and prevent the iqtadars from accumulating wealth and power.
- Transfer of Iqtas: Mohammad Tughlaq frequently transferred iqtas from one iqtadar to another to prevent them from becoming too powerful.
- State Control: He increased state control over various aspects of governance, including the economy, military, and administration, reducing the iqtadars' influence.
- Strict Punishments: Mohammad Tughlaq imposed strict punishments on iqtadars who abused their power or exploited the peasants, discouraging them from engaging in such activities.

In conclusion, both Alauddin Khalji and Mohammad Tughlaq implemented various policies to keep a check on the iqtadars and prevent them from becoming too powerful. Their measures aimed to centralize power, increase state control, and reduce the iqtadars' influence in different aspects of governance.