New Delhi, Nov 8 (UNI) Congress leader and Leader of the Opposition in the Lok Sabha Rahul Gandhi, Congress president and Leader of the Opposition in the Rajya Sabha Mallikarjun Kharge and Congress general secretary Priyanka Gandhi Vadra, on Sunday, extended warm Diwali greetings to the people of the country, wishing happiness, prosperity and peace in every household while invoking the festival''s message of hope, brotherhood, social harmony and the triumph of light over darkness.