What happened when Madhavrao brought a message from Baba to Shama regarding a Dakshina of fifteen rupees?

The story from Chapter 18 details an unusual interaction initiated by Sai Baba. Madhavrao arrived and informed Shama that Baba had sent him with a message: 'Take fifteen rupees as Dakshina from Shama.' Madhavrao explained that Baba had abruptly remembered Shama while he was serving Him and instructed him to go and return with the Dakshina. Upon hearing this, Shama was extremely surprised and, instead of providing the money, replied to tell Baba that his 'namaskar' was his Dakshina. Baba had also instructed Madhavrao to sit and converse with Shama for a while, turning the request for money into an opportunity for satsang.