The rich man had four sons. As the rich man grew old he decided to give his property to his son who would value his wealth most.
So, he called his sons and gave each of them five Grains of rice and told them that he would ask for these grains at the end of 5 years. At last, he said that he would give all his property to his son who will value these grains most.
First son threw away the grains and decided to show some other grains when the father would ask for them. He thought that his father would not be able to guess the difference between sets of grains.
The second son eats them and the first son thinks of showing other grains when the father demands.
The third son kept grains in the silver box at home and offered prayer to the box while praying to God.
Fourth son went to his home and sowed those grains in his backyard. He cultivated them in the backyard and After they grew harvested them. He kept on re-sowing the grains from this crop and in 5 years time period, he had a vast plot of land cultivated with rice.
After 5 years when all the sons reached home. Father gave his property to the fourth son as he was the one who valued those grains most.