Rinse and soak dry Rajma for 6 hours or overnight in a covered container.
Set Instant Pot to Saute mode and heat ghee. Add cumin seeds and allow them to sizzle, for about 1 minute. Press the Cancel button to turn off the Instant Pot.
Add onion, ginger, garlic, green chili, onions, tomato puree, kidney beans, salt, coriander powder, turmeric, red chili powder, garam masala, and water. Give a quick stir.
Optional Pot in pot brown rice: Add rice, water, and salt in a stainless steel bowl. Place a tall trivet inside the Instant Pot. Place the rice bowl on top of the trivet.
Close the Instant Pot lid with Steam Release to Sealing. Set Instant Pot to Bean/Chili mode and adjust the cooking time to 30 minutes. Allow natural pressure release.
Open the Instant pot, take out the rice bowl, and trivet.
Garnish the rajma with cilantro. Serve hot with rice or parathas.