Chapter 10 describes Sai Baba's unusual sleeping habits. Can you explain where he slept and what made this arrangement so remarkable?

According to Chapter 10, Sai Baba's lifestyle was as remarkable as his teachings. He slept on a peculiar wooden plank that was merely four cubits long and one span wide, which is approximately nine inches. This narrow plank was suspended from the rafters like a swing, tied at both ends with old rags. Astonishingly, lamps would be kept burning at His head and feet while He slept. Chapter 10 highlights that His movements were imperceptible; no one ever knew when He climbed up to the plank or when He descended. This incredible feat was possible because Great Siddhis, or powers, resided within Him, making the plank merely a nominal sleeping place.