Based on the experience of the man from Bandra, what is the relationship between a devotee's faith and the effectiveness of the Udi?

The story of the man from Bandra illustrates a crucial connection between faith and the power of Udi. Chapter 35 recounts how a Sai devotee told the suffering man, "If you too keep faith, the Udi will manifest its influence." The instructions for using the Udi were not just mechanical; he was told to "remember Shri Sai in your mind" and "Keep devotion in your heart." The immediate success of the remedy suggests that the Udi's natural tendency to remove trouble is activated and amplified by the devotee's faith and sincere remembrance of Sai, demonstrating that the physical substance and spiritual devotion work in tandem.