What does the text say about fulfilling promises, especially those made to a spiritual guide like Sai Baba?

The source text strongly emphasizes the importance of fulfilling one's promises, framing it as a matter of clearing a spiritual debt. Chapter 33 uses the example of Appasaheb, who mentally resolved to give ten Rupees after feeling his family's offering was too small. The text poses a rhetorical question: 'how will the word be fulfilled? how would they be debt-free?' It points out that many of us are 'devoted to verbal promises' but hesitate when it's time to act. The narrative highlights that Sai Baba was not an ordinary beggar, and fulfilling a promise made to him was crucial for the devotee.