How does the story of the wealthy man and his wife illustrate the value of sincere giving versus giving with a deceitful heart?

The narrative from Chapter 47 provides a stark contrast between sincere and deceitful giving. The wife, guided by a divine vision, resolved to offer her personal ornaments out of pure faith. In contrast, her greedy husband, who believed visions were merely due to disturbed sleep, tricked her. He took her valuable ornaments for himself and gave her a worthless, mortgaged piece of land to donate to Shankara. The text emphasizes that giving without love or faith is worthless, stating, "Whatever is given without faith will all be as worthless as dust." This story clearly demonstrates that God values the sincerity of the heart over the material value of the offering, noting that even "one penny given with a sincere heart is worth a million."