How to Fill a Room

My husband just told me a story one of his grade school teachers told him:

A father showed his two sons the house he had just built. "You each have your own room," he pointed out. The rooms were bare, so the father gave a few rupees to the sons, saying, "You may spend this much to fill your rooms." The eldest son traveled far to buy a large amount of hay. He bundled it into stacks, and pulled it home in a cart. He arranged the stacks in his room. Satisfied that he had done what his father asked of him, he looked to see how his brother was doing. As he peeked into the room, he saw that his brother had furnished his space with just a table, chair, and lamp. He was about to chide him for not following their father's instructions, when the flame from the lamp illuminated the face of the father, who had been in the room all the while. When the younger son began to pray, his voice filled the whole room.