What is the significance of Shraddha, and how did Sai Baba address its neglect?

Shraddha is a Hindu ritual, specifically a death anniversary ceremony, to honor one's ancestors. In Chapter 4, Sai Baba addresses its importance through the story of Bhagwantrao Kshirsagar. Bhagwantrao's father was a great devotee of Vitthal, but after his passing, Bhagwantrao neglected the household worship, food offerings (Naivedya), and even the annual Shraddha. Baba, calling the deceased father his friend, told Bhagwantrao that this neglect was causing both Vitthal and Baba himself to go hungry. As recounted in Chapter 4, Baba explained that he had purposefully pulled Bhagwantrao to Shirdi to remind him of these sacred duties and guide him back to the path of worship.