Surat An-Nisaa (The Women) - النساء

وَلَن تَسْتَطِيعُوٓا۟ أَن تَعْدِلُوا۟ بَيْنَ ٱلنِّسَآءِ وَلَوْ حَرَصْتُمْ فَلَا تَمِيلُوا۟ كُلَّ ٱلْمَيْلِ فَتَذَرُوهَا كَٱلْمُعَلَّقَةِ وَإِن تُصْلِحُوا۟ وَتَتَّقُوا۟ فَإِنَّ ٱللَّهَ كَانَ غَفُورًا رَّحِيمًا ﴿١٢٩﴾

And you have it not in your power to do justice between wives, even though you may wish (it), but be not disinclined (from one) with total disinclination, so that you leave her as it were in suspense; and if you effect a reconciliation and guard (against evil), then surely Allah is Forgiving, Merciful.