Which extraordinary promise did Sai Baba make regarding His personal role in the writing of His own life story?

As detailed in Chapter 2, when the author sought permission to write, Sai Baba made an extraordinary promise about His direct involvement. He declared that the author was "merely a pretext" and that He Himself would be the true author. Sai Baba stated, "I myself shall write my own story! I should tell my own story and fulfill the devotee's wish." He further clarified that once the author's ego was dissolved, He would "enter with 'I-ness' and write with my own hand," making it clear that the resulting collection of stories was a divine act, not just a human endeavor.