What is the Nishkam approach to understanding 'shraddha' and 'saburi'?

The provided text does not mention the concepts of 'shraddha' and 'saburi,' so it cannot describe a Nishkam approach to understanding them. However, Chapter 0 does explain the Nishkam approach in the context of studying spiritual texts. Using Guru biographies or knowledge texts with a 'Nishkam' (selfless) mind is for the purpose of attaining liberation from the world and freedom from the cycle of birth and death. This is contrasted with the 'Kamya' approach, which is done with desire for worldly prosperity or the removal of worries. Chapter 0 explicitly states that Nishkam Guru service is always superior.