How did Sai Baba demonstrate his omniscience when Shama brought him Damu Anna's letter about the cotton trade?

When Madhavrao, also known as Shama, brought Damu Anna's letter to the Masjid, Sai Baba displayed his profound insight before it was even read. According to chapter 25, Baba immediately commented on the letter's nature, asking, "What plans is he making?" and stating, "It seems he is trying to touch the sky! He doesn't want what God gives." Shama was amazed, confirming that Baba's words were the "exact meaning of the letter." This interaction shows that Baba knew the "inner intent" of the devotee's mind and the contents of the letter without needing it to be read to him, showcasing his clairvoyant abilities.