How does Chapter 10 connect the tangible, miraculous act of Baba sleeping on a plank to the intangible, metaphysical power of a Guru to grant liberation?

Chapter 10 masterfully connects the physical and metaphysical by presenting Sai Baba's miraculous sleeping arrangement as a tangible proof of his divine authority. The seemingly impossible act of resting on a narrow plank held by rags is explained not by physics, but by the "Great Siddhis (powers)" within him. This physical miracle serves as an allegory for the Guru's spiritual power. The same power that allows him to defy gravity on the plank is the power that can "strike a nail over the lines of destiny" for his devotees. As the chapter states, by placing faith in the Guru, the knots of the heart are broken and karmas are destroyed. The plank, therefore, is not just a curiosity but a visible symbol of the very power that operates on a deeper level to guide devotees across the "ocean of existence" and grant them liberation.