Why did Maharaj have four lit lamps around him when he slept on the hanging plank?

The provided texts describe the unique way Maharaj slept but do not explicitly state the reason for the four lit lamps. Chapter 0 mentions that after Nanasaheb Dengle brought a wooden plank, Maharaj hung it from the rafters with rags and began sleeping on it. The text states, 'While sleeping, Maharaj would place four lit lamps at the four corners.' However, the source material does not offer a specific explanation for why he did this. It is presented as a factual detail of this extraordinary event, which drew the curiosity of many people.