Everyday, a shepherd used to take his cows for grazing. He had tied a bell to each of the cows he had so that he could know where they were grazing. The best cow had a costly bell tied around her neck.
One day, a stranger was going through the pasture. Seeing the costly bell around the cow‘s neck, he went to the shepherd and asked if he would sell the bell.
Out of greed, the shepherd sold the bell. But now he could not know where his best cow was grazing.
On getting an opportunity, the stranger stole the cow. Thus, the shepherd lost his best cow just because of his greed.