What was the specific nature of Kashiram Shimpi's devotion and service to Sai Baba?

The introduction in Chapter 0 provides a detailed account of Kashiram Shimpi's devotion. He became a total devotee of Maharaj, serving him excellently with his body, mind, and wealth. He once stitched and gifted Baba a green kafni and a green cap, although Baba usually wore white. More significantly, Kashiram took a vow to provide Maharaj with a continuous supply of chillum, tobacco, and the firewood for his sacred Dhuni. His financial devotion was so complete that he would place his entire money bag before Maharaj, humbly requesting him to take as much as he wished.