According to the source, what was Sai Baba's primary motivation for authorizing the writing of his life story?

As detailed in Chapter 3, Sai Baba's motivation for permitting his life story to be written was deeply connected to the spiritual welfare of his devotees and the fulfillment of his own mission. He stated, "In this alone is your welfare, and also the fulfillment of my avatar." He explained that through the writing and subsequent listening of his divine play, "the faults of ignorance (Avidya) will be destroyed." He believed that by engaging with his story, devotees would experience a fading of worldly consciousness, and "waves of the nectar of devotion and love" would rise, allowing them to obtain gems of knowledge.