Okay, so imagine you have a big bag of toys that you don't need anymore. You decide to have a garage sale to sell those toys to other kids who might want them. You set up a table outside your house with all the toys neatly organized and priced.
Now, imagine the government also has things that they don't need anymore, like buildings or land. Instead of having a garage sale, the government has something called a salehi. It's kind of like a garage sale for the government. They sell things like buildings or land to people who might want to use them.
The money the government gets from these salehis can be used to help pay for things like schools, roads, or hospitals. And the people who buy the land or buildings can use them for their own businesses or homes.