Based on the text, how is Sai Baba's compassionate nature demonstrated both before and after his Nirvana?

The source material illustrates Baba's compassion both during his life and after his Samadhi. Before his Nirvana, Chapter 33 mentions the incident with the mysterious Tanga, describing Baba as a "motherly Sai" and a "skilled actor" who rushes to help devotees in crisis. After his Samadhi in 1918, his compassion is shown through the healing of Narayanrao. By appearing in a dream to cure the devotee's illness, Baba demonstrates that he is "beyond birth and death" and ever-present. This proves that his protective and caring nature was not limited by his physical form.