وَلَن تَسْتَطِيعُوٓا أَن تَعْدِلُوا بَيْنَ ٱلنِّسَآءِ وَلَوْ حَرَصْتُمْ ۖ فَلَا تَمِيلُوا كُلَّ ٱلْمَيْلِ فَتَذَرُوهَا كَٱلْمُعَلَّقَةِ ۚ وَإِن تُصْلِحُوا وَتَتَّقُوا فَإِنَّ ٱللَّهَ كَانَ غَفُورًا رَّحِيمًا

Walan tastateeAAoo an taAAdiloobayna annisa-i walaw harastum falatameeloo kulla almayli fatatharooha kalmuAAallaqatiwa-in tuslihoo watattaqoo fa-inna Allaha kanaghafooran raheema

And you will never be able to be equal [in feeling] between wives, even if you should strive [to do so]. So do not incline completely [toward one] and leave another hanging. And if you amend [your affairs] and fear Allāh - then indeed, Allāh is ever Forgiving and Merciful.