Kasim and Alibaba were two brothers. They were living in a city in Persia. Kasim was rich and Alibaba was very poor. Alibaba was earning his livelihood by selling firewood.
Everyday he went to the forest with his three donkeys and cut the trees for firewood, brought and sell them in the town. One day he heard the sound of horses coming. He hide the donkeys behind the bushes .
He immediately climbed a tree and watched.
The horsemen came near a big rock cave and stopped. Every horse carried a big bag. Alibaba counted them. They were forty. Alibaba thought they were all thieves.
The leader of the gang stood before the cave and shouted, "Open sesame!"
And Io! The door of the cave opened. The thieves went inside the cave with the large bags. Soon the door closed.
After sometime they all came back with empty bags. The leader shouted, "Close sesame." The door closed. The forty thieves then went away.