Tell me about the group of devotees from Madras mentioned in the Satcharita.

In Chapter 29, a story is told about a group of devotees from the Madras (now Chennai) region who came to Shirdi. This group, consisting of a man and three women, were followers of the Ramdasi sect and had spent a year engaged in devotional singing. Their fame had spread in their home region. While on a pilgrimage to Kashi, they made a stop in Shirdi to have the darshan of Sai Baba. During their stay, they performed devotional singing with great enthusiasm. The chapter notes that Baba was pleased with them and gave them eight rupees and eight annas, though his interactions, as was his way, were not always predictable.