A weak fisherman caught a strong fish in his net and not being able to retain it the fish overcame him and pulled the net from his hand.

 A boy went to bring water from the torrent. 
 The torrent came and took the boy away. 
 The net brought every time a fish. 
 This time the fish went and carried off the net. 

The other fishermen were sorry and blamed him for not being able to retain such a fish which had fallen into his net. He replied: `O brothers, what can be done? My day was not lucky but the fish had yet one remaining. `Moral: A fisherman cannot catch a fish in the Tigris without a day of luck and a fish cannot die on dry ground without the decree of fate.