Pressure cook both the dals together adding turmeric, 1/2 green chili and the pumpkin pieces adding 1/2 cup water in Instant pot for 10 minutes. After 10 minutes of Natural pressure release open, stir and mash everything except the green chili.
Heat sesame oil in a pan add mustard seeds when it splutters add cumin seeds fenugreek seeds then add the small onion cut into 4 give it a few minutes to give a nice aroma then add the eggplant toss for a few minutes then add paprika, turmeric, coriander, sambar powder and salt. Sauté on low heat for a few minutes then add in other vegetables like cluster beans, drumstick, ash gourd and finally tomato.
Saute the veggies for a few minutes add into the cooked dal. Then add 1 cup water to the pan itself allow it to boil then add along with veggies add tomato paste a hint of asafetida, coriander leaves stir well . Pressure cook for 5 minutes. (Or less as per your preference of veggie softness) this is pretty soft.
Natural pressure release for 5 minutes then open and stir gently. Add the rest of coriander leaves, curry leaves and fenugreek powder and a hint of asafetida powder on top. Close and keep aside for few minutes. Allow the flavors to mingle. Stir once gently before serving
Serve warm sambar along with rice , idly or dosa.CONSISTENCY : Slightly thick yet easily pourable consistency.