Advice

It is said that there was a famine in a village,Then the governor of the village asked for a strange request in an attempt to counter the threat of drought and hunger.
He told them he would put a great deal in the middle of the village , And every man and woman put in a pot of milk, provided that each one puts the cup alone without being seen by anyone.
People rushed to meet the governor's request,All of them are hidden at night and poured what is in the cup that belongs to him.
In the morning the governor opened the pot, and what did he see? Watch the pot filled with water! He asked the people where the milk was?
And Why did each of the parishians put water instead of milk?