Surah Al-Mumtahanah 60:11

وَإِن فَاتَكُمْ شَىْءٌ مِّنْ أَزْوَٰجِكُمْ إِلَى ٱلْكُفَّارِ فَعَاقَبْتُمْ فَـَٔاتُوا۟ ٱلَّذِينَ ذَهَبَتْ أَزْوَٰجُهُم مِّثْلَ مَآ أَنفَقُوا۟ ۚ وَٱتَّقُوا۟ ٱللَّهَ ٱلَّذِىٓ أَنتُم بِهِۦ مُؤْمِنُونَ

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

Translation: Saheeh International

Tafsir

And if you lose any of your wives that is to say if you lose one or more of them — or it means if you lose anything of their dowries — by their going to the disbelievers as apostates and so you retaliate you embark upon a raid and capture spoils from them then give those whose wives have gone from the spoils the like …

Excerpt from Tafsir al-Jalalayn, commentary on 60:11, via Quran.com. The reader has the full commentary and 9 more tafsirs.