Verse 5 of Chapter 5

All the good and pure things have today been made lawful for you; the food of the people of the Book is lawful for you, and your food for them, Likewise you are permitted to marry chaste believing women or chaste women from among the people who were given the Scripture before you provided that you give them their dowries and become their protectors in wedlock; this permission is not for sensual license or secret illicit relations; whoever rejects the way of Faith, all the deeds of his life shall become vain and he shall be a bankrupt in the Hereafter.