Firstly, take a wok, into it add oil and heat it.
Add garlic cloves into it and saute.
Add chopped tomatoes, mix well and cook till they turn soft.
Add tamarind, mix and cook for 4-5 minutes.
Cool the whole mixture.
In a blender, add the mixture, add salt, add red chilli powder, add roasted methi seeds and mustard seeds powder.
Blend the tomato mixture into a smooth paste.