Add beans and cumin to 10 cups of boiling stock in pot and cook over medium heat for 2 1/2 hours.
Brown chicken in skillet add onion, peppers and corn, saute until golden. Add garlic, stir, and cook 2 minutes. Add mixture to beans after 2 1/2 hours. Stir, and cook until beans are tender, approx 1/2 hour. Add additional stock as needed. Add lime juice, tomatoes and cilantro. Add a dollop of sour cream in the center of a bowl of soup and garnish with green onions.
Please Note: Nutritional values listed may vary from final results depending on actual measurements and brands used to prepare the recipe.