"And if you fear that you cannot act equitably towards orphans, then marry such women as seem good to you, two and three and four; but if you fear that you will not do justice (between them), then (marry) only one or what your right hands possess; this is more proper, that you may not deviate from the right course." - Quran 4:3 (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 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