How does Chapter 51 connect the act of listening to the Sai Charitra with the destruction of ignorance discussed in the context of the Bhagavad Gita?

Chapter 51 masterfully links the practice of listening to the Charitra with the profound spiritual goal of destroying ignorance. The chapter opens by stating that 'By listening to this Sai Charitra, both the listener and the speaker become pure.' It then transitions to an analysis of the Bhagavad Gita, explaining that the true spiritual victory is the destruction of delusion, which is equated with ignorance. By placing these two ideas in proximity, the text implies that listening to the sacred narrative is the very means by which this purification and destruction of delusion occurs, much like how Arjuna's delusion vanished upon hearing the words of Shri Krishna.