How does Chapter 10 describe Sai Baba's unusual sleeping arrangements?

Chapter 10 of the Shri Sai Satcharitra provides a fascinating description of Sai Baba's sleeping habits. It states that He slept on a wooden plank that was merely four cubits long and one span, or about nine inches, wide. This narrow plank was suspended from the rafters like a swing, tied at both ends with old rags. The chapter highlights the mystery surrounding this, noting that no one ever saw when He climbed up to or descended from this precarious bed, making His movements completely imperceptible to onlookers.