Cook dal and keep aside. Grind coconut, green chilly and cumin seeds to get a fine paste. Keep aside Cook beans with enough water. When almost done add dal and coconut paste, mix well and cook on medium flame for about 5 minutes. Heat oil in a pan and add mustard and when they crackle add urid dal and fry for a while. Add this to the moloshyam. Garnish with curry leaves and serve hot with rice.