What is the main story introduced in Chapter 31, and what philosophical points are made?

Chapter 31 introduces the story of a sannyasi from Madras named Vijayananda. This sannyasi was on a journey to Mansarovar but stopped in Shirdi upon hearing of Sai Baba's fame. Alongside this narrative, the chapter emphasizes the philosophical importance of one's state of mind at the time of death, stating that whatever one meditates upon at that final moment is the form one attains in the next life. As explained in Chapter 31, the practice of remembering God's name is crucial for this reason, ensuring one does not get confused in difficult times and can achieve liberation.