"Prohibited to you (For marriage) are:- Your mothers, daughters, sisters; father's sisters, Mother's sisters; brother's daughters, sister's daughters; foster-mothers (Who gave you suck), foster-sisters; your wives' mothers; your step-daughters under your guardianship, born of your wives to whom ye have gone in,- no prohibition if ye have not gone in;- (Those who have been) wives of your sons proceeding from your loins; and two sisters in wedlock at one and the same time, except for what is past; for Allah is Oft-forgiving, Most Merciful;" - Quran 4:23 (read more)

"Narated By Abdullah ibn Abbas : The Prophet (pbuh) said: If you find anyone doing as Lot's people did, kill the one who does it, and the one to whom it is done." - Tirmidhi 1457 (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