"Also (forbidden are) women already married, except those whom your right hands possess. Thus has Allah ordained for you. All others are lawful, provided you seek them from your property, desiring chastity, not fornication. So with those among them whom you have enjoyed, give them their required due, but if you agree mutually after the requirement (has been determined), there is no sin on you. Surely, Allah is Ever All-Knowing, All-Wise." - Quran 4:24 (read more)

"Narrated Anas bin Malik: While we were sitting with the Prophet in the mosque, a man came riding on a camel. He made his camel kneel down in the mosque, tied its foreleg and then said: "Who amongst you is Muhammad?" At that time the Prophet was sitting amongst us (his companions) leaning on his arm. We replied, "This white man reclining on his arm." They then addressed him" - Sahih Bukhari 1:3:63 (read more)

"The Noble Qur'an has also mentioned the waiting period [i.e. for a divorced wife to remarry] for the wife who has not yet menstruated, saying: "And those who no longer expect menstruation among your women - if you doubt, then their period is three months, and [also for] those who have not menstruated" [Qur'an 65:4]. Since this is not negated later, we can take from this verse that it is permissible to have sexual intercourse with a prepubescent girl." - IslamOnline