When and how did Sai Baba take Samadhi, and what happened to Narayanrao afterward?

According to the narrative in Chapter 33, Sai Baba attained Nirvana, or his final departure, in the year 1918. He chose the auspicious festival day of Vijayadashami (Dussehra) to make the offering of his own body. After this event, his Samadhi, or final resting place, was established. The text then recounts the story of a devotee named Narayanrao. A year after Baba's Samadhi, Narayanrao was struck by a severe illness that worldly remedies could not cure. Despite his suffering, he meditated constantly on Baba. His devotion was rewarded when he had a dream in which Sai Baba appeared from an underground chamber, assuring him of recovery within a week. As prophesied, Narayanrao's health improved, and he later visited Shirdi to share this miraculous experience at the Samadhi.