According to Nana Chandorkar's explanation to Dixit, what is required to get Sai Baba's darshan?

When explaining Sai Baba's nature to Kakasaheb Dixit, Nana Chandorkar emphasized that receiving Baba's darshan is not a matter of chance but of divine will. Chapter 51 relays Nana's words, which include Baba's own promise: 'No matter how far my person is, even if beyond the seven seas, I tie a string like a sparrow and pull them here immediately.' Nana then clarified the core principle to Dixit, stating that 'without Baba's will, one cannot be drawn to Him.' The ultimate prerequisite, as Nana put it, is that 'Unless you belong to Him, you will not get His darshan; this is Baba’s great sign.'