What spiritual practice did Sai Baba undertake in the days immediately preceding his passing, as described in Chapter 44?

According to Chapter 44 of the Shri Sai Satcharitra, Sai Baba, knowing his end was near, engaged in a specific and focused spiritual practice. For fourteen continuous days and nights, he had a Brahmin read the Ramayana to him, and he listened with intense contemplation. This period of listening to the sacred epic for two full weeks concluded on the day of Vijayadashami, which is when Baba attained the state of bodilessness, or passed away. This act is highlighted as a significant event leading up to his Mahasamadhi.