Why did Bapusaheb Buti become so worried about the mansion he was building as Baba's health declined?

As Sai Baba fell seriously ill and his end seemed near, Bapusaheb Buti became deeply uneasy and anxious about the mansion. Chapter 39 explains that Buti was troubled because he had already spent lakhs of rupees on the construction, and he began to fear that Baba's feet would never touch the temple. His regret was profound, as he felt that the mansion and the planned Murlidhar temple would be utterly useless without Sai Baba's presence. The text states Buti's heart was troubled with thoughts like, "After Baba has left his body, what is the use of Murlidhar or the house?"