How did Maharaj's methods for helping people change over time?

Initially, Maharaj provided medicine to people and never charged for it. Chapter 0 notes that he was so dedicated that if a patient was not being cared for properly, he would personally go and tend to them. However, he later stopped this practice and transitioned to giving only Udi, or ash, which people also found beneficial. Maharaj himself explained this shift to the writer, whom he called Kaka, stating, "I used to give medicine to people before. Later, I stopped giving medicine and started saying 'Hari Hari', and while saying Hari Hari, I met Hari."