Can you tell me about the time a devotee named Karnik had an encounter with a saint in Nashik?

Yes, the story of Karnik's encounter in Nashik is detailed in Chapter 33. While visiting the temple of Kala Rama for Darshan, Karnik unexpectedly met the saint Narsing Maharaj. In the midst of a crowd of devotees, Maharaj suddenly stood up, grabbed Karnik by the wrist, and demanded, "Give my Rupee." Although Karnik was initially amazed, he gave the Rupee with great joy, feeling as if Sai Baba himself was accepting the offering. The text notes that it was less of a gentle acceptance and more of a forceful taking, illustrating one of the unique ways in which Sai's grace could manifest.