Which object did Maharaj primarily use for healing after he stopped prescribing conventional medicine?

Chapter 0 of the text explains that after a period of giving out medicine for free, Maharaj's healing method changed. He stopped providing medicine and instead began to give out only Udi, which is identified as ash. The text notes, "Later, Maharaj stopped giving medicine and gave only Udi, i.e., ash." It also mentions that he used to give ash even before this change and people would benefit from it, but it became his primary method later on. Maharaj himself explained this transition, linking the cessation of giving medicine to his deeper spiritual practice of chanting 'Hari Hari'.