What was the specific reason for Chand Patil's journey to Shirdi, and what was Sai Baba's role in it?

Chand Patil's journey to Shirdi was for a family wedding. The narrative in Chapter 5 explains that Patil, being the village official of Dhup, was part of a wedding procession for his wife’s nephew, who was getting married to a bride from Shirdi. After the Fakir (Sai Baba) revealed his divine nature through miracles, he accepted Patil's invitation to stay at his home in Dhup for some time. When the time came for the wedding journey, Baba accompanied Chand Patil and the marriage party, which is how the 'gem' that was Baba returned to Shirdi after being hidden for some time.