My dear brothter Mahir, again, donkeys braying who call themselves scholars. Brother, a parent DOES NOT OWN their child! Period. No parent can marry off their baby. No parent owns the future of their children. Period. And no one is allowed to get married until they "reach the age of marriage".
There is no necessity in marrying off a child, and you never have that right. How do you know that the baby that you married your baby-daughter to will be a good man anyway??? Have you not read the story of Moses and Khidr?
Marrying off babies and children is a crime, akhi. It is against Islam.
Take care,
Osama Abdallah