How did the devotee known as 'Kaka' demonstrate his unwavering devotion, particularly at the end of his life?

The devotee whom Maharaj called 'Kaka' showed his devotion through constant service, even at over sixty years of age. His ultimate demonstration of faith, as described in Chapter 0, occurred during his final three days. He began to see Maharaj everywhere and in everyone. He would say 'Sai Baba' to whoever approached him. Most notably, when his own wife came near, he said, 'Come, Sai Baba.' When she tried to correct him, he replied, 'Who is in you? Baba is there. You are Baba.' Thus, his life concluded in a state of constant and complete remembrance of Maharaj.