you got me.. I was wrong They don't teach a man has to wait until a girl gets her period to marry her. They have to wait till her first period to have sex with her. The interpretation of the verse “And those of your women as have passed the age of monthly courses, for them the Iddah (prescribed period), if you have doubt (about their periods), is three months; and for those who have no courses [(i.e. they are still immature) their Iddah (prescribed period) is three months likewise”. He said: The same applies to the `Iddah for girls who do not menstruate because they are too young, if their husbands divorce them after consummating the marriage with them. (End quote from Tafsir At-Tabari, 14/142) It was narrated from `A’ishah (may Allah be pleased with her) that the Prophet (peace and blessings of Allah be upon him) married her when she was six years old, and consummated the marriage with her when she was nine, and she stayed with him for nine years. (Narrated by Al-Bukhari, 4840 and Muslim, 1422) Ibn `Abd Al-Barr (may Allah have mercy on him) said: The scholars unanimously agreed that a father may marry off his young daughter without consulting her. The Messenger of Allah married `A’ishah bint Abu Bakr when she was young, six or seven years old, when her father married her to him. (End quote from Al-Istidhkar, 16/49-50)