Can you describe Sai Baba's unusual sleeping arrangements as mentioned in Chapter 10 and what they reveal about his nature?

Chapter 10 details Sai Baba's extraordinary sleeping habits. He would rest on a narrow wooden plank, merely four cubits long and one span wide, which was suspended from the rafters like a swing using old rags. Lamps would burn at his head and feet. The text emphasizes that his movements were completely imperceptible; no one ever knew when he got onto or descended from this precarious plank. As described in this chapter, this illustrates his mastery over physical limitations and his possession of Great Siddhis (powers), suggesting the plank was more a symbolic resting place than a physical necessity. His ability to move unseen, perhaps in the form of flies or insects, highlights his divine, subtle nature.