Based on the provided text, who were the main individuals involved in the altercation in front of Sai Baba?

The main individuals involved were Damu Anna and a devoted female follower named Mavshibai. According to Chapter 24, Anna was a man over fifty years old who had no teeth. Mavshibai, whose original name was Venubai Kaujalgi, was also of a mature age and was a widow. Baba affectionately called her 'Mother' (Aai). Both were dedicated to serving Sai Baba, but a quarrel erupted between them while they were simultaneously pressing and massaging him. Sai Baba himself was the third party, who ultimately diffused the situation with his humor.