What was the peculiar story about the plank Maharaj used for sleeping in the Masjid?

In the Masjid, Maharaj would sleep on a wooden plank that was curiously suspended from the rafters using old rags. Chapter 0 highlights the miraculous nature of this, as the rags appeared too frail to bear the weight of the plank, let alone Maharaj's body. While he slept on this plank, he would place four lit lamps at its corners. A great mystery surrounded this practice, as no one ever saw Maharaj climbing up to or down from the plank, despite many people keeping watch. Eventually, because large crowds started gathering to witness this spectacle, Maharaj broke the plank to remove the distraction.