Mystery of the speaking pot

One day two farmers couple were ploughing in the field. They felt a big hard material was under the soil, they couldn't understand first and ignored but the next day, they felt the same when they came to plough the field and decided to dig that particular place to know what was hidden under the soil. So, they started digging the soil but couldn't find anything. They again started their work in the field and found nothing and they returned home in the evening.

Next day, the couple went to field to plough the field again they found something was under the soil and they again decided to dig the soil and after so many hours they found a pot and they became happy and stopped digging further and tried to drag the pot from the soil towards them. But the pot was so heavy that they couldn't drag it upward. Then they left the pot and covered the pot with so many grasses and wastage. Then they left for home and forgot about the pot.

They ate and went to sleep.

On the next morning, after completion of work at home they went to field, and they couldn't believe their eyes.

They saw that a very big pot was there in the field and was covered with a lid.

They went closer to the pot and saw a lot of paper note were inside the pot and something were written on them and when they looked into, they heard a mysterious sound, a voice was coming from somewhere and asked them to pick each letter and read. They followed the same and read one by one loudly.

Total five letters were there and the things which were written on them were.... In first letter -

      - Save tree and avoid cutting trees 

In second letter 

       - Save water

  by using drip water facility for field.

In third letter -conserve energy by using solar panel

In fourth letter -

       - Save environment by avoiding stubble burning

And in fifth letter -

        - Save soil by using Nim coated urea

     Farmers couple became surprised and thought who had put all these letters inside it and promised to do so Infront of the pot and left for home.

The next day they came and found their field green with full of crops. They became happy and started searching for the pot everywhere but didn't find it and thought that how and where the pot had gone?

 and how the pot had come from here?

And how their field became filled with crops in a night?

All has remained mystery till now.

But the farmers are enjoying their lives by obeying the pot's condition.