Once, a king was crossing a desert, his hawk perched on his shoulders. The hot sun made him thirsty and he went to look for a stream.
Luckily, he chanced upon a fountain not very far. He knelt down and was about to drink the water, when suddenly the hawk swooped down and pecked his hand.
He stooped down to drink the water again. But the hawk pecked his hand again.
The thirsty king screamed angrily at the hawk. When he stooped down, something glistened in the water.
It was a fierce poisonous snake. The king knew that a single sip of that water would have killed him.
He felt terrible for screaming and apologized to his hawk, petting it lovingly. The hawk too, forgave his master.