What is the significance of performing a 'Parayan', and why are some biographical works considered more suitable for this practice than others?

As explained in Chapter 0, performing a Parayan or Saptah (a week-long reading) of a Guru's biography is a form of devotional service. However, not all works are suitable for this purpose. While poets like Shri Dasganu Maharaj have written about saints, their accounts are often not comprehensive, sometimes spanning only two or three pages. For a meaningful Parayan, a detailed, poetic, and comprehensive work is needed. Such detailed works allow devotees to immerse themselves in the saint's life, thereby achieving the purpose of their lives through this dedicated study and service.