Can you explain the conditions for attaining Sai's 'darshan' and its ultimate purpose as described in Chapter 15?

Chapter 15 suggests that attaining the vision, or 'darshan', of Sai is a significant spiritual achievement, not granted to everyone. The text explicitly states, "Those whose immense merits have borne fruit, Only they attain the vision (darshan) of Sai." This indicates that it is a reward for past virtuous deeds. The purpose of this darshan is profound; it helps the devotee overcome the "threefold afflictions" and, most importantly, achieve the means to the supreme goal, referred to as Paramartha. Therefore, as presented in Chapter 15, Sai's darshan is both a blessing earned through merit and a powerful catalyst for spiritual liberation.