Can you recount the story of Sai Baba's interaction with Nana Chandorkar about the Bhagavad Gita?

Chapter 50 recounts an insightful incident involving Nana Chandorkar. While Nana was serving Baba's feet, he was silently muttering verses from the fourth chapter of the Bhagavad Gita. Sai Baba noticed and asked him what he was muttering so secretly. Nana explained he was trying not to disturb others. Baba insisted he speak clearly and then asked for the meaning of the verse 'Tadviddhi pranipatena...' Nana gave the standard meaning from traditional commentators, which Baba accepted. However, Baba then playfully pointed out a deeper way to contemplate the verse, showing his divine wisdom and grace.