What was the significance of the author finding the Nath Bhagawat book at Shama's residence?

The discovery of the Nath Bhagawat book was a pivotal moment orchestrated by Sai Baba to teach a lesson. In the account from Chapter 18, the author, having been sent to Shama's house on a pretext, casually picked up the book. It miraculously opened to the very section he had left incomplete in his morning reading out of laziness. The author felt 'great wonder' at this, realizing that Baba had engineered the entire situation. The significance was the enforcement of discipline; Baba subtly made him complete his neglected reading, reinforcing the importance of regular spiritual practice without fail.