There are ten morally wrongconducts: killing , stealing , adultary , lying , slandering , swearing , gossiping ,ttreachery , plotting to destory , and false beliefs. Contrary to these conducts are the positive rules if good conduct , or the ten factor of kusala. Liking in accordance with these factor of kusala dhamma is a mingalar. In other words it is a source of great benefits and happiness.
A long long time ago , the was a village called Dhammapala in the Kingdom of Kasi. The villagers lived a way of life in keeping with kusala dhamma. There lived in the village and old ponnar, a high caste Hindu, who had a son named Dhammapala. Following the father’s arrangement for his studies, Dhammapala went to the University of Taxila. One day, the Chief Prifessor’s eldest son passed away.He died so young that all were much aggrieved.
Dhamapala could not understand how death came to one so young. The natives of his village did not die while young. They died only at old age. Dhammapala told his fellow students about it. When the professor heard of the story, he did not believe it. He decided to pay a visit to Dhammapala’s father to investigate.If he found it correct, he would ask about and learn the good ways of longevity. So, he went to the village of Dhammapala, taking along with him a bag containing bones of goat.
When he reached the village and saw Maha Dhammapala, thevprofessor informed the old man of his son’s passing away, showing the goat bones out of the bag. The elder ponnar and the villager did not believe him and , laughing among themselves ,told the professor that he was lying.
The good professor apologized for what he said, admitting to the father he came only to investigate the truth of what Dhammapala had told his fellow students. And then, he asked about the cause of long life. The elderly ponnar explained at length the rule of kusala dhamma, finally concluding that these rules of conduct were , in fact , the factors leading to longevity.

Written By Sayar Min Yu Wai
Translated By Sayar U Nyi

Source : 550 Nipada, Dhammapala