Based on the information in Chapter 39, what was Sai Baba's purpose for incarnating and coming to Shirdi?

Chapter 39 of the Sai Satcharitra explains that Sai Baba's arrival was a deliberate act for a specific, compassionate purpose. The text states that 'Out of great concern for the upliftment of his devotees, Sai takes this incarnation and comes to Shirdi of his own accord.' It further clarifies the beneficiaries of his mission, identifying them as 'The dull-witted, the fallen, and the poor, those without vows, penance, or sacraments—simple and faithful people.' The chapter rhetorically asks who else but Sai would uplift such individuals, thereby emphasizing his role as a savior for the humble and devoted.