How did Sai Baba demonstrate that strong faith could manifest a vision of Vitthal for his devotees?

Sai Baba demonstrated the power of faith through the experiences of his devotees. As detailed in chapter 4, He told Das Ganu that Vitthal would appear if the devotee was "full of faith," and indeed, Das Ganu later had a vision. Similarly, after Kakasaheb Dixit had a vision of Vitthal during meditation, Baba confirmed it by asking, "Vitthal Patil had come, right?" This experience was further solidified when a seller appeared with pictures of Vitthal, one of which perfectly matched Kakasaheb's vision, proving that intense devotion and belief could manifest the divine right where the devotee is.