Question

my sons said he a great treasure lies hiden in the estate​

Answer 1

My sons told me that he had a great treasure hidden in the estate.

Explanation:

This is direct speech:

My sons said, "he has a great treasure lies hidden in the estate."

The direct speed is quoted as said by the narrator and no changes are made in it. It is written as said by the narrator.

Indirect speech:

The indirect speech is reported as coming from an indirect source. It is written in your own words not as said by the narrator.

My sons told me that he had a great treasure hidden in the estate.