How does Chapter 10 illustrate Sai Baba's mastery over the physical world through the concept of Siddhis?

Chapter 10 provides compelling evidence of Sai Baba's mastery over the physical realm through his divine powers, or Siddhis. The primary example is his ability to sleep on a narrow plank suspended by flimsy rags, a feat that defied gravity and logic. The text clarifies that this was possible because 'Great Siddhis resided within Him' and the plank was 'merely an excuse.' It specifically mentions the 'Anima' siddhi, the power to become minute, suggesting Baba could move imperceptibly like a fly or ant. The chapter further emphasizes his command by stating that all eight Siddhis 'stand with folded hands in His presence,' indicating his complete control over supernatural abilities and his existence beyond worldly constraints.