Two friends were going on a pilgrimage to a certain holy place. They went to the railway station and when the train arrived one asked the other out of politeness to board the train first. The other also did not want to seem lacking in courtesy and asked the first man to board the train before him. They went on making such requests to each other when the train left the platform without either of them having boarded it. Thus they lost their chance on that day of going to the holy place.