Sura al-Aḥzāb 33:52

لَّا يَحِلُّ لَكَ ٱلنِّسَآءُ مِنۢ بَعْدُ وَلَآ أَن تَبَدَّلَ بِهِنَّ مِنْ أَزْوَٰجٍ وَلَوْ أَعْجَبَكَ حُسْنُهُنَّ إِلَّا مَا مَلَكَتْ يَمِينُكَ وَكَانَ ٱللَّـهُ عَلَىٰ كُلِّ شَىْءٍ رَّقِيبًا

lā yaḥillu la-ka l-nisāu min baʿdu wa-lā an tabaddala bihinna min azwājin wa-law aʿjabaka ḥusnuhunna illā mā malakat yamīnuka wa-kāna allāhu ʿalā kulli shayʾin rraqīban

It is not lawful for thee (to marry more) women after this, nor to change them for (other) wives, even though their beauty attract thee, except any thy right hand should possess (as handmaidens): and Allah doth watch over all things.