Using the example of Bade Baba, what profound social lesson did Sai Baba teach about the treatment of guests?

Sai Baba used his interactions with Bade Baba to teach a powerful lesson on social conduct and the sacred duty of hospitality. Despite Bade Baba's occasional difficult behavior, such as getting angry at mealtime, Baba treated him with the utmost respect. Chapter 23 explains that this was Baba's way of teaching. He demonstrated that to eat food without including a guest in the row is improper. By his own example, Baba showed how to follow this code of conduct. The scripture in Chapter 23 further clarifies that by honoring a guest, one averts calamities and attains desired outcomes. Conversely, if a guest remains without food, it is a great sin that destroys one's animals, sons, wealth, and grain.