Based on the source text from Chapter 35, explain the philosophical concept of non-duality in the context of devotion to Sai.

Chapter 35 provides a profound description of achieving a non-dual state through devotion to Sai Baba. The narrator explains that for a devotee, the experience of perception itself merges with Sai. Specifically, it mentions that the "triad of the seen, the seer, and the seeing vanishes," eliminating the separation between the devotee and the divine. This concept extends to all senses; the text from the thirty-fifth chapter describes Sai's light being present in the sense of touch and his residence being in the sense of smell. Similarly, hearing a word can cause Sai's form to manifest, shattering the triad of the hearer, the heard, and the act of hearing, thus erasing duality.