Why did Sai Baba tell Nana to interpret the word 'Jnana' (Knowledge) as 'Ajnana' (Ignorance) in the verse they were discussing?

Sai Baba's instruction to reinterpret the verse was a profound teaching moment described in Chapter 39. He explained to Nana that Knowledge is not a subject for speech and cannot be 'instructed' in the conventional sense. Therefore, to say a wise person 'instructs in Knowledge' is a contradiction. By suggesting the word should be 'Ajnana' (Ignorance), Baba highlighted the true purpose of spiritual teaching: to explain and help remove Ignorance. He stated that 'Ignorance is a subject for speech,' and by understanding and dispelling it, the self-existent Knowledge is automatically realized, leading to true awakening.