You are arguing that you can disregard ethics/morals, if you live in a certain time period.
While I'll give you that marriage was different, marrying children is always wrong regardless of the time period. That being said, God is timeless, surely he would comment on such. You can't honestly believe a child is going to just mature into a full adult at the age of 9, to do that you'd have to be either extremely ignorant(willing) or just not know what maturity is.
Lol, read what you quote moron.
"According to Muslim theologians, it is lawful for male masters to have sexual relations with female captives and slaves regardless of whether or not the slave woman gave her consent."
Sorry, you just got owned......by yourself.