How does Chapter 15 link the concept of 'merit' with the act of listening and receiving Sai's 'darshan'?

Chapter 15 creates a clear progression from merit to divine vision. It begins by stating that only those whose "immense merits have borne fruit" are able to attain the vision (darshan) of Sai, which is the means to the supreme goal. The chapter then presents the act of listening to these stories with faith as the very process through which this merit is realized and rewarded. As described in Chapter 15, attentive listening cultivates devotion and purifies the heart, which in turn pleases Sai. This pleased state of the Guru results in Him granting His darshan, completing the cycle that began with the devotee's accrued merit.