Rajma (Kidney Bean Curry)

Ingredients: 1 1/2 cup kidney beans (rajma) 1 teaspoon salt (adjust to taste) 2 large tomatoes 1 tablespoon ginger 1 green chili 3 tablespoon oil Generous pinch of asafetida (hing) 1 teaspoon cumin seeds (jeera) 2 tablespoon coriander powder (dhania) 1/2 teaspoon turmeric (haldi) 1/2 teaspoon red chili powder (adjust to taste) 1/2 teaspoon black pepper 1 teaspoon paprika 1 medium chopped tomato for garnishing