Believers, when believing women come to you as Emigrants (in the cause of faith), examine them. Allah fully knows (the truth) concerning their faith. And when you have ascertained them to be believing women, do not send them back to the unbelievers. Those women are no longer lawful to the unbelievers, nor are those unbelievers lawful to those (believing) women. Give their unbelieving husbands whatever they have spent (as bridal-dues); and there is no offence for you to marry those women if you give them their bridal-dues. Do not hold on to your marriages with unbelieving women: ask for the return of the bridal-due you gave to your unbelieving wives and the unbelievers may ask for the return of the bridal-due they had given to their believing wives. Such is Allah's command. He judges between you. Allah is All-Knowing, Most Wise.