This frightened the fisherman, but the genius laughed and said,
"Do not be afraid; I only did it to frighten you, and to show you
that I intend to keep my word; take your nets and follow me."

He began to walk in front of the fisherman, who followed him
with some misgivings. They passed in front of the town, and went
up a mountain and then down into a great plain, where there
was a large lake lying between four hills.

When they reached the lake the genius said to the fisherman,
"Throw your nets and catch fish."

The fisherman did as he was told, hoping for a good catch,
as he saw plenty of fish. What was his astonishment at seeing
that there were four quite different kinds, some white, some red,
some blue, and some yellow. He caught four, one of each colour.
As he had never seen any like them he admired them very much,
and he was very pleased to think how much money he would get
for them.

"Take these fish and carry them to the Sultan, who will give you more
money for them than you have ever had in your life. You can come
every day to fish in this lake, but be careful not to throw your nets
more than once every day, otherwise some harm will happen to you.
If you follow my advice carefully you will find it good."

Saying these words, he struck his foot against the ground,
which opened, and when he had disappeared, it closed immediately.

The fisherman resolved to obey the genius exactly, so he did