What specific spiritual practice did Sai Baba undertake in the days leading up to his passing?

In the days just before he passed away, Sai Baba engaged in a profound devotional practice. As narrated in Chapter 44, knowing his end was near, Baba arranged to have the Ramayana recited to him by a Brahmin. He listened to this recitation with intense and focused contemplation for a continuous period of fourteen days and nights. The text highlights that it was immediately after these two weeks of listening to the Ramayana were completed that the day of Vijayadashami arrived, and Baba attained the state of bodilessness, or Mahasamadhi.