Question

he said ,when I was playing in the garden, i saw a snake there​

Answer 1

Answer:

He said that he had seen a snake when he was playing in the garden or

He said that when he was playing in the garden he had seen a snake

Explanation:

Direct speech into indirect speech

Answer 2

Answer:

Indirect speech: he said that when I was playing in the garden, i saw a snake there​.

=> Direct speech: He said: " When you are playing in the garden, you see a snake here".