In Islam the muslim male must have control of all his human possessions which are his slaves. This is his reward for being a slave to Allah. This includes the power of having sex with a nine-year old or giving his daughter at this age to have sex with a man.
There is no law in the bible regarding the age at which a female can begin sexual relations because nature, as God has created it, imposes its own laws through the sexual development of the child into the woman. The female body and soul determines when a female is ready and when it is appropriate to begin sexual relations and not some arbitrary man-made law as in Islam. When the child has developed in to a woman she seeks these things of her own volition in self-determination. This is the image of God in man. Sharia law violates this natural God-given order.