How did Sai Baba utilize Udi to assist Nana Chandorkar's family during their times of crisis?

According to Chapter 33, Sai Baba's Udi proved to be miraculously effective for Nana Chandorkar's family on two separate, critical occasions. In one instance, when Nana's wife was suffering from a severe high fever, he was far away and lacked any Udi. In an act of faith, he picked up clay from the road, offered prayers to Sai, and applied it to her forehead, which resulted in the fever subsiding immediately. In another astonishing miracle, Nana's daughter was enduring unbearable labor pains in Jamner. Baba, being omniscient, was aware of her suffering from Shirdi and dispatched Udi and an Aarti via Ramgir Buwa, showcasing his profound care and the immeasurable power of his Udi.