What is the significance of Parayans and Saptahs in serving a Sadguru like Sai Baba and his community?

According to the principles outlined in Chapter 0, a Sadguru accepts service from devotees in two main ways through books: either by creating works themselves or by having their biographies written. Performing Parayans or Saptahs of a detailed biography is a key form of this service. This practice is not just for individual benefit; when other devotees also study and perform these Parayans, the writer gains the merit of serving "God in humanity" (Jan-Janardan) and public service. This communal study allows the entire congregation of devotees to achieve the purpose of their lives, creating a strong spiritual community centered on the Guru's life and teachings.