What was Sai Baba's practice concerning 'Dakshina' as illustrated in the story of Ratanji?

The story of Ratanji in Chapter 14 sheds light on Sai Baba's unique and important practice of asking for Dakshina, or an offering. Immediately upon meeting Ratanji, Baba asked him, "What Dakshina will you give Me? Then you will be fulfilled." The text explains this was His custom with everyone, whether Hindu, Muslim, or Parsi. The amount was not fixed; He might ask for a small sum or for hundreds and thousands. He would even tell people to borrow money if they claimed to have none. This wasn't for personal gain, but rather a spiritual tool to test faith and encourage detachment, as He would also promise to give back "bags of rupees" and urged devotees to sit peacefully near Him.