وَلَن تَسْتَطِيعُواْ أَن تَعْدِلُواْ بَيْنَ النِّسَاء وَلَوْ حَرَصْتُمْ فَلاَ تَمِيلُواْ كُلَّ الْمَيْلِ فَتَذَرُوهَا كَالْمُعَلَّقَةِ وَإِن تُصْلِحُواْ وَتَتَّقُواْ فَإِنَّ اللّهَ كَانَ غَفُورًا رَّحِيمًا
﴿١٢٩﴾
سورة النساء
(4/129) And you will never be able to be just between wives, even if you should strive, so do not incline too much to one of them so as to leave the other hanging, and if you reconcile and have piety, then surely Allah is Oft-Forgiving, Most Merciful.
Surah An-Nisa