Work

The Grand Vazir told the soldiers , " If at the end of the day you are not exhausted it means that no work has been done."

The next day the soldiers went into the forest . They swam in the river, frolicked in the fields, played games and came back totally exhausted.

"Aha," said the Vazir, " I see that finally all of you have been working."

Moral: The safest thing to do is to follow an instruction to the letter.