"Call it marriage, Islamic style.
Saudi marriage officiant Dr. Ahmad al-Mu’bi told Lebanese television viewers last week that it’s permissible for girls as young as 1 to marry — as long as sex is postponed."
Well then. How long should sex be postponed?
“You can have a marriage contract even with a 1-year-old girl, not to mention a girl of 9, 7 or 8,” he said. “But is the girl ready for sex or not?” What is the appropriate age for sex for the first time? This varies according to environment and tradition,” al-Mu’bi said."
In other words, as young as you want 'em to be.