According to the source, how did Sai Baba attract devotees to the bhajans on Chavadi nights?

The text in Chapter 37 uses a powerful metaphor to explain Sai Baba's ability to attract devotees. It describes Baba as a 'powerful magnet' who, through the 'attraction of His own power,' would pull the 'iron-like devotees' and draw them unknowingly to His feet. This magnetic pull gathered men and women who had respect for Hari-bhajan, compelling them to come to the assembly hall and join in the devotional singing and music that filled the air before the procession to the Chavadi began.