A single rotten mango can spoil all others
Once there was an old man . He had four sons. They had fallen into bad company . They mixed up with gamblers. The father advised them not to mix with such persons .
But the advice had no effect on them. One day, the old man bought a basketful of mangoes . He told the sons to eat the mangoes the next morning .
The old man kept one rotten mango among them. The next morning, the sons found that most of the mangoes were rotten . The father told them the cause . The sons learnt a lesson . They left the bad company .
A single rotten mango can spoil all others .