Chapter 4 mentions saints using 'Pravritti' to build on a foundation of 'Nivritti.' Can you explain what this means based on the text?

Chapter 4 of the Sai Satcharitra uses a powerful metaphor to describe the mission of saints. It states they 'fill the foundation of Renunciation (Nivritti) and build the temple of Ultimate Truth; Around the frame of Worldly Activity (Pravritti), they easily uplift the devotees.' Based on the context of this chapter, this suggests that a saint's work is grounded in the ultimate spiritual goal of detachment and renunciation (Nivritti). However, they operate within the world of ordinary life and duties (Pravritti) to guide and uplift devotees. They don't demand that everyone abandon the world, but rather use the structures of worldly life as a framework to awaken faith and lead people towards the ultimate truth, as described in Chapter 4.