"Such of your women as have passed the age of monthly courses, for them the prescribed period, if ye have any doubts, is three months, and for those who have no courses (it is the same): for those who carry (life within their wombs), their period is until they deliver their burdens: and for those who fear Allah, He will make their path easy." - Quran 65:4 (read more)

"Narrated Kurib: the freed slave of Ibn 'Abbas, that Maimuna bint Al-Harith told him that she manumitted a slave-girl without taking the permission of the Prophet. On the day when it was her turn to be with the Prophet, she said, "Do you know, O Allah's Apostle, that I have manumitted my slave-girl?" He said, "Have you really?" She replied in the affirmative. He said, "You would have got more reward if you had given her (i.e. the slave-girl) to one of your maternal uncles." - Sahih Bukhari 3:47:765 (read more)

"The marriage of a Christian man to a Muslim woman is an invalid marriage. Allah says in the Quran, "And give not [Muslim women] in marriage to idolaters until they believe" (al-Baqara 221). Therefore, it is not allowed for a disbeliever to marry a Muslim woman... If he does marry her, the marriage is invalid. The children are the children of fornication. They are to be given to their mother and ascribed to her alone." - Shaikh ibn Baz