My son yesterday morning

I am in a farm, there are many animals
There is a duck in a pen, without any egg in it
The next day I return to the farm, this time in the pen I see a small golden egg, at this time I know it's a dream
I go to the farmer to let him know
I return the next day, the duck is now laying many golden eggs
When the farmer sells them at the market, he shares the money with me