Okay, imagine you and your best friend both have some toys that you don't want anymore. You both decide to have a little sale where you can each sell your toys to other people who might want them. This is called a yard sale or a flea market.
Now, let's pretend that you are married to someone and you both have some things in your house that you don't need or want anymore. Your husband thinks that maybe he can make some money by selling these things to other people, just like you did with your toys. This is what we call "husband selling" - when a man in a marriage sells things from his home to make some extra money.
It's important to talk to your partner before selling anything to make sure that both people in the relationship agree on what things should be sold and for how much money. Sometimes, it's better to donate things to charity or give them away to friends instead of selling them. So, just like you would discuss with your friend what toys to sell, you and your partner need to decide together what items are okay to sell in your own sale.