Why did Baba stop giving medicine and start giving Udi?

Sai Baba himself explained his shift from providing medicine to giving Udi, or ash. As recounted in Chapter 0, he told the author, "Kaka, 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." This statement suggests a profound spiritual evolution. While his initial service involved physical healing through medicine, he transitioned to a method centered on divine invocation and spiritual remedies like Udi. This change indicates his own journey towards "meeting Hari" (God) through constant remembrance of the divine name, and subsequently sharing that spiritual grace with others.