Which set of events confirmed Kakasaheb Dixit's vision of Vitthal?

Chapter 4 recounts the experience of Kakasaheb Dixit, who had a vision of Vitthal during his morning meditation. The confirmation of this vision came through a sequence of events. First, when he went for Baba's darshan, Baba cryptically asked him, "Vitthal Patil had come, right?" and warned him to hold on to Vitthal tightly. The ultimate proof came later that afternoon when a seller from out of town arrived with twenty-five pictures of Vitthal of Pandharpur. Kakasaheb was amazed to find that one of the pictures exactly matched the form that had appeared in his meditation. He then purchased the picture and installed it for worship.