What does the Narada Purana state about the importance of 'shraddha' and 'saburi' when writing a Guru's biography?

The provided source material does not detail what the Narada Purana states about 'shraddha' and 'saburi.' In Chapter 0, the Narada Purana is cited for a different reason: to establish that the service of writing a Guru's biography is a very ancient tradition. The text uses this reference to add historical weight to the practice of creating and studying biographies of Gurus. It does not delve into the specific contents or philosophical teachings contained within the Narada Purana itself, focusing instead on the general practice of Guru service through writing.