24:32
And marry the single among you and the righteous among your male slaves, and your female slaves. If they are poor, will enrich them Allah from His Bounty. And Allah (is) All-Encompassing, All-Knowing.

2:221
And (do) not [you] marry [the] polytheistic women until they believe. And a bondwoman (who is) believing (is) better than a polytheistic woman [and] even if she pleases you. And (do) not give in marriage (your women) (to) [the] polytheistic men until they believe, and a bondman (who is) believing (is) better than a polytheistic man [and] even if he pleases you. [Those] they invite to the Fire, and Allah invites to Paradise and [the] forgiveness by His permission. And He makes clear His Verses for the people so that they may take heed.