How does Chapter 10 describe Sai Baba's sleeping arrangements, and what did this reveal about his divine powers?

Chapter 10 explains that Sai Baba's lifestyle and movements were often imperceptible. He slept on a peculiar wooden plank, which was merely four cubits long and one span (about 9 inches) wide. This narrow plank was suspended from the rafters like a swing, tied at both ends with old rags. Despite this precarious setup, Baba would sleep on it with lamps burning at his head and feet. The text emphasizes that no one ever saw him climb up or down. As Chapter 10 posits, the plank, held by mere rags, could not have supported his weight through normal means. This demonstrated his possession of Great Siddhis (powers), suggesting the plank was a support in name only and that he could move with the lightness of an insect, exercising powers like 'Anima' (the ability to become minute).