To prepare curd besan mixture:
In a kadhai add besan to curd and whip together till mixture is smooth. Now add all the spice powders, ginger- garlic paste with salt and mix well. Add 3 cups of water.

Now put this kadhi on gas stove and cook for about 20-30 minutes till the mixture starts thickening and darkening.
Stir kadhi continuously/or in few seconds of interval to avoid lumps.

To make your Rajma kadhi :
Once the kadhi base is ready, add boiled Rajma and mix well. cook them soaked for about 5 minutes.

Now add in the dry red chillies, curry leaves, and fenugreek seeds and cook for 30 seconds more.
Add in the cooked kadhi mixture. The mix will splash so lower the flame. Mix well, Uncover and cook for a couple of minutes. Put the flame off.

Tempering the Kadhi:
Heat oil in a kadhai or pan. When hot, add mustard seeds, cumin seeds and asafetida. Wait till mustard and cumin seeds sputter which takes about a minute.

Taste and adjust seasoning. Keep them covered for about 5 minutes.
Serve hot garnished with coriander leaves.
Your Rajma kadhi is ready to serve. Serve it hot with boiled rice.