It was a hot summer day. Sun was shining bright up in the sky. A lion was sitting under the shade of a big tree and in some time got asleep. Nearby that tree, there was a hole, in which there lived a mouse. When the lion was sleeping, the mouse came out of its hole and saw him asleep.
Unaware of the lion's strength, it got tickled by an idea. It thought of waking up the lion by running over his body just for fun.
Unfortunately, the lion seized it in his strong paw. The mouse pleaded for its life. Being generous by nature, the lion set it free. The mouse promised to help the lion if it ever got the chance. The lion laughed aloud at this. After all, how could a tiny mouse help the king of the jungle?
A few days later, the mouse was passing through the jungle when he saw the same lion trapped in a hunter's net. Immediately, it set to work, gnawing at the ropes. Very soon the tiny mouse had set the lion free.
Moral: Remember, mercy never goes unrewarded.