"So again, there is no number of minimum age in Islam, nor is the female having her first period a condition."
Osama rightly points out (as Surah 65:4 proclaims), that Muslim men are free to have sex with girls who haven't reached puberty, so long as certain other conditions obtain. According to Osama, those conditions are as follows:
1- The person "balagha ashudduh" has reached the age of physical strength. This obviously varies from person to person. A 9 or 10-year old girl might be ready for marriage, while a 14-year old might not.
2- The person (male and female) is not "tifl" (child). Again, this is more of a mental condition and it too varies from person to person.
3- The females have become "FATAYA" (young ladies or young females or young teenage females, or young women). So a female who is still a child and not a fatah (singlular of fataya) is not permitted to get married.
4- The males have reached the age of "hulum". Hulum means had an ejaculation of semen either while awake or during sleep. Boys before this stage are also not permitted to get married, in Islam.
Well, I have a challenge for Osama and other Muslims who claim that they want to defend Muhammad, since I don't believe they're really willing to defend him. Here's the question for them, and I hope they will respond clearly and honestly.
QUESTION FOR MUSLIM MEN: SUPPOSE YOU LIVED IN A COUNTRY WITH SHARIA-COMPLIANT MARRIAGE LAWS. FURTHER, IF YOU'RE ALREADY MARRIED, PRETEND FOR A MOMENT THAT YOU'RE NOT. IF YOU WERE SEEKING A MARRIAGE PARTNER, AND A SUITABLE ARRANGEMENT WITH THE PARENTS OF A NINE-YEAR-OLD GIRL COULD BE MADE, AND THE GIRL WAS INTELLIGENT AND ABLE TO DO HOUSEHOLD CHORES, WOULD YOU BE WILLING TO MARRY HER AND HAVE SEX WITH HER?
There's the challenge. Now let's see who's really willing to stand up for Muhammad.