Could you recount the experience of the man from Bandra who suffered from bad dreams and explain how Udi resolved his issue?

Certainly. Chapter 35 narrates the story of a gentleman of the Prabhu Kayastha caste from Bandra who was unable to sleep peacefully. Every time he would fall asleep, he would be awakened by his deceased father in a dream, who would berate him with curses and verbal blows about past matters. This recurring incident left the man exhausted and fed up, with no remedy in sight. He confided in a Sai devotee, who expressed faith in the power of Sai's Udi. This devotee gave him a small portion of the sacred ash and provided clear instructions: apply a little to the head when going to sleep, tie the rest in a packet under the pillow, and keep Shri Sai in mind. The gentleman followed this advice, and as Chapter 35 confirms, that very night he fell into a deep, untroubled sleep, and the bad dreams never occurred again, leaving him overjoyed.