What was Sai Baba's practice regarding Dakshina as described in the story of Ratanji?

Chapter 14 describes Sai Baba's unique practice of requesting Dakshina (a monetary offering) from his devotees. When Ratanji came for darshan, Baba's first action was to ask him for Dakshina. The text clarifies that this was his standard practice with everyone, whether they were Hindu, Muslim, or Parsi. The amounts he requested varied greatly, from one or two rupees to hundreds or thousands, and he would sometimes push devotees to give more, even suggesting they take a loan. However, this was paired with reassurance, as Baba would tell them, "Do not worry even a little bit; I will give you bags of rupees," implying a spiritual transaction where faith and surrender were returned with abundant blessings.