What is the historical basis for the practices of Parayan and Saptah as described in the source?

The text emphasizes that the practices of performing Parayans (devotional readings) and Saptahs (weekly recitations) are not modern customs but are deeply rooted in history. According to Chapter 0, this tradition is 'very ancient, dating back to the Vedic era.' The author provides examples to illustrate this long-standing heritage, noting that Parayans and Saptahs of major Sanskrit works such as the Vedas, Bhagavata, Ramayana, and Yoga Vasistha are common occurrences. This tradition extends to revered Marathi works as well, such as the Shri Dnyaneshwari and Shri Dasbodh, demonstrating the enduring importance of these devotional reading practices across different eras and texts.