Surah An-Nisaa Verse 129

وَلَن تَسْتَطِيعُوا أَن تَعْدِلُوا بَيْنَ النِّسَاءِ وَلَوْ حَرَصْتُمْ ۖ فَلَا تَمِيلُوا كُلَّ الْمَيْلِ فَتَذَرُوهَا كَالْمُعَلَّقَةِ ۚ وَإِن تُصْلِحُوا وَتَتَّقُوا فَإِنَّ اللَّهَ 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

Translation / The Meaning

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 Allah - then indeed, Allah is ever Forgiving and Merciful.