Can you tell me the story of the argument that happened between Damu Anna and Mavshibai while they were serving Sai Baba?

Yes, Chapter 24 recounts an incident where Damu Anna and Mavshibai, both mature devotees, had a quarrel while serving Sai Baba. Damu Anna was pressing Baba's hand while Mavshibai was vigorously massaging Baba's stomach. As she was swaying with the effort, her face came close to Damu Anna's. Mavshibai, being humorous, playfully accused him of trying to kiss her, asking if he had no shame for his gray hair. Misunderstanding her joke, Anna became angry and rolled up his sleeves, ready to argue. The text details how he retorted that she was the one who brought her face close to his. The situation was resolved only when Sai Baba himself intervened with a clever remark.