There was a poor lady in Vrindavan who was selling fruits. On a particular day, she could not sell a single fruit. Feeling helpless, she went house to house trying to sell them. Little Krishna was at home at that time. He heard the fruit-seller calling out to people to buy fruits.
With the intention of buying fruits, Lord Krishna ran inside, collected some food-grains in both his hands and came out to buy fruits in exchange for the food-grains. Alas! Most of the food-grains had slipped off between his fingers and his hands were almost empty. He looked at her helplessly but lovingly and gave her the few little grains he had in his hands.
The fruit-seller was so pleased with his charming innocence that she filled up both his hands with fruits with almost nothing in exchange for it. Her basket was empty. She put the few grains that Krishna had given her into the basket and walked back home with an inexplicable smile and total satisfaction. When she did so, she noticed that immediately the basket was full of precious gems!!
The Lord had blessed the fruit-seller immensely for her unconditional and selfless Devotion!!