Describe Sai Baba's method of instruction as portrayed in the account of the narrator hearing the song.

Chapter 19 reveals that Sai Baba's teaching method is subtle, pervasive, and not bound by time or place. As the text states, "Sai does not need a place for teaching, nor does he need a specific time." His instruction happens naturally in any situation. This is shown when the narrator, having just made a private resolve to chant Rama's name, hears a song with that exact theme. The narrator interprets this as the compassionate Sai watering the "sprout" of his resolve. Baba's method involves reflecting the devotee's inner state externally, providing direct proof and guidance without overt, verbal instruction, as if he were a puppeteer pulling the strings of inspiration.