Al Ahzab, 52 Ayah
33:52
لَّا يَحِلُّ لَكَ ٱلنِّسَآءُ مِنۢ بَعۡدُ وَلَآ أَن تَبَدَّلَ بِهِنَّ مِنۡ أَزۡوَٰجٖ وَلَوۡ أَعۡجَبَكَ حُسۡنُهُنَّ إِلَّا مَا مَلَكَتۡ يَمِينُكَۗ وَكَانَ ٱللَّهُ عَلَىٰ كُلِّ شَيۡءٖ رَّقِيبٗا ٥٢
Lā Yaĥillu Laka An-Nisā' Min Ba`du Wa Lā 'An Tabaddala Bihinna Min 'Azwājin Wa Law 'A`jabaka Ĥusnuhunna 'Illā Mā Malakat Yamīnuka ۗ Wa Kāna Al-Lahu `Alá Kulli Shay'in Raqībāan
Not lawful to you, [O Muhammad], are [any additional] women after [this], nor [is it] for you to exchange them for [other] wives, even if their beauty were to please you, except what your right hand possesses. And ever is Allah, over all things, an Observer.