What was the 'proof' Kakasaheb Dixit received after he had a vision of Vitthal?

Kakasaheb Dixit's experience provides a remarkable confirmation of his vision, as narrated in Chapter 4. After having a vision of Vitthal during his morning meditation, he went for Sai Baba's darshan. Baba surprised him by asking if "Vitthal Patil" had come and humorously described Vitthal as a "big runaway" who must be nailed down. The true proof came later that afternoon when a seller arrived with twenty-five pictures of Vitthal of Pandharpur. To his amazement, one of the pictures was an exact replica of the form he had seen in his morning vision. Remembering Baba's words, Dixit was filled with love and bought the picture to install for his daily worship.