Before sunset, the jinnee again begged the fishermen to release him and had promised to help him. Due to them becoming friendly with each other after exchanging tales the fisherman decided to let the jinnee out of the copper bottle.
The jinnee brought the fisherman to a beautiful lake, surrounded by mountains. Before the jinnee disappears, he instructed the fisherman to cast his net to the lake once a day and bring whatever he will catch to the sultan.
Cast your net in the lake once a day and bring to the sultan whatever you will catch
The fisherman caught four fishes, each with different color and more beautiful from the other one, he then kept his promise to the jinnee and brought the fishes to the sultan's palace, where there seemed to be much sadness.
Upon seeing the fishes, the sultan asked the fisherman on where did he caught it, and to bring him to that place.
Where did you caught those fishes? Can you take me there?
As the fisherman led the sultan to the lake, the sultan told him of a tale about a sorceress. Upon arriving at the lake, they found a gloomy castle near the lake where the sorceress resides
There was once a sorceress thaturned the surrounding town into lake and the people in it into fishes. She also did other bad things
The sultan used his wiles to destroy the sorceress in the castle, thus changing back the lake into a town and the fishes into people, the mountains into islands, and the desert into a sea.