How did Sai Baba sleep, and what did this reveal about his divine powers according to Chapter 10?

Chapter 10 of the Shri Sai Satcharitra describes Sai Baba's unusual sleeping arrangement. He would sleep on a narrow wooden plank, just four cubits long and one span wide, which was suspended from the rafters by old rags. Despite the precariousness of this setup, Baba slept soundly with lamps burning at his head and feet. The text emphasizes that his movements were imperceptible; no one ever saw him get on or off the plank. This miraculous feat is attributed to his Great Siddhis (powers), suggesting the plank was merely a prop. The chapter further explains that due to his power of 'Anima' (becoming minute), he could move with ease in the forms of flies or insects, highlighting his mastery over the physical realm as detailed in chunk 3.