Why did the wealthy banker in the story refuse to spend money on the temple, even after his wife received a divine vision?

The wealthy banker was described as the embodiment of stinginess, with a mind solely focused on accumulating wealth day and night. According to Chapter 47, the very idea of spending money, even for a sacred purpose, was extremely disturbing to him. When his wife told him about her vision promising a hundredfold return for building the temple dome, he immediately dismissed it. He rationalized his disbelief by questioning why God would appear in her dream instead of his, suggesting it was a false dream or a divine trick meant to cause a rift between them. His own crooked and miserly nature made him perceive the world through a lens of suspicion.