What makes a Guru's biography a special type of text, and what are Parayans and Saptahs?

A Guru's biography is defined in Chapter 0 as a reliable and true book that describes the Guru's entire life journey, including their incarnation, childhood, youth, and old age. It also details their wonderful plays (Leelas), incomparable miracles, and the significant works of their incarnation. The text emphasizes that the study of such biographies is a profound form of Guru service. This study is often performed through specific devotional practices like Parayans, which are repeated readings (sometimes hundreds), and Saptahs, which are structured weekly recitations. These practices, dating back to the Vedic era, are considered most effective when performed with detailed, poetic biographies.