Al-Mumtahana 60:11

If any of your wives desert you and join the disbelievers [without returning your dowries], and later you take spoils from them, then give to those whose wives have deserted them the equivalent of what they had spent. And fear Allah, in Whom you believe.

And if you have lost any of your wives to the disbelievers and you subsequently obtain [something],[1678] then give those whose wives have gone the equivalent of what they had spent. And fear Allāh, in whom you are believers.

[1678] From the side of the disbelievers, i.e., war booty or a believing woman seeking refuge with the Muslims.

11. And if any of your wives have gone from you to the disbelievers, (as apostates and you asked them to return back your Mahr but they refused) - then you went out for a Ghazwah (military expedition) (against them and) gained booty; then pay from that booty to those whose wives have gone, the equivalent of what they had spent (on their Mahr ). And fear Allâh in Whom you believe.

And if any of your wives have gone from you unto the disbelievers and afterward ye have your turn (of triumph), then give unto those whose wives have gone the like of that which they have spent, and keep your duty to Allah in Whom ye are believers.