4:129
وَلَن تَسْتَطِيعُوٓا۟ أَن تَعْدِلُوا۟ بَيْنَ ٱلنِّسَآءِ وَلَوْ حَرَصْتُمْ ۖ فَلَا تَمِيلُوا۟ كُلَّ ٱلْمَيْلِ فَتَذَرُوهَا كَٱلْمُعَلَّقَةِ ۚ وَإِن تُصْلِحُوا۟ وَتَتَّقُوا۟ فَإِنَّ ٱللَّهَ كَانَ غَفُورًۭا رَّحِيمًۭا
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.
Translation · Saheeh International
Tafsir
Ibn Kathīr (abridged)
The Ruling Concerning Desertion on the Part of the Husband
Allah states, and thus legislates accordingly, that sometimes, the man inclines away from his wife, sometimes towards her and sometimes he parts with her. In the first case, when the wife fears that her husband is steering away from her or deserting her, she is allowed to forfeit all or part of her rights, such as provisions, clothing, dwelling, and so forth, and the husband is allowed to accept such concessions from her. Hence, there is no harm if she offers such concessions, and if her husband accepts them. This is why Allah said,
فَلاَ جُنَاْحَ عَلَيْهِمَآ أَن يُصْلِحَا بَيْنَهُمَا صُلْحاً
(there is no sin on them both if they make terms of peace between themselves;) He then said,
وَالصُّلْحُ خَيْرٌ
(and making peace is better) than divorce. Allah's statement,