وَلَن تَسْتَطِيعُوٓا۟ أَن تَعْدِلُوا۟ بَيْنَ ٱلنِّسَآءِ وَلَوْ حَرَصْتُمْ ۖ فَلَا تَمِيلُوا۟ كُلَّ ٱلْمَيْلِ فَتَذَرُوهَا كَٱلْمُعَلَّقَةِ ۚ وَإِن تُصْلِحُوا۟ وَتَتَّقُوا۟ فَإِنَّ ٱللَّهَ كَانَ غَفُورًا رَّحِيمًا
Wa lan tastatee'ooo an ta'diloo bainan nisaaa'i wa law harastum falaa tameeloo kullal maili fatazaroohaa kalmu'al laqah; wa in tuslihoo wa tattaqoo fa innal laaha kaana Ghafoorar Raheema
You will never be able to deal with perfect fairness among your wives, however much you try. So do not lean entirely toward one, leaving the other suspended. If you set things right and remain mindful of God, indeed God is ever forgiving, merciful.