Can you provide examples from the text where Sai Baba emphasized faith as a prerequisite for devotees to experience a divine vision?

The accounts in Chapter 4 strongly emphasize the necessity of faith for divine experiences. For instance, when Das Ganu was organizing a Name-week and requested that Lord Vitthal must appear, Sai Baba placed a hand on his chest and firmly stated, "Yes, yes, the form of Vitthal will appear! But the devotee must be full of faith." This faith was indeed rewarded when Das Ganu had a vision of Vitthal in Shirdi. Similarly, Kakasaheb Dixit also received a vision of Vitthal during his morning meditation, which Baba later confirmed by asking him about "Vitthal Patil." These events illustrate a core teaching: that with intense love and unwavering faith, a devotee can experience the divine presence right where they are, without needing to travel to distant holy sites.