(4:129) 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.
Muhammad Taqi-ud-Din al-Hilali and Muhammad Muhsin Khan,
(4:129) You will never be able to do perfect justice between wives even if it is your ardent desire, so do not incline too much to one of them (by giving her more of your time and provision) so as to leave the other hanging (i.e. neither divorced nor married). And if you do justice, and do all that is right and fear Allah by keeping away from all that is wrong, then Allah is Ever Oft-Forgiving, Most Merciful.
Mohammed Marmaduke William Pickthall
(4:129) Ye will not be able to deal equally between (your) wives, however much ye wish (to do so). But turn not altogether away (from one), leaving her as in suspense. If ye do good and keep from evil, lo! Allah is ever Forgiving, Merciful.
Abdullah Yusuf Ali
(4:129) Ye are never able to be fair and just as between women, even if it is your ardent desire: But turn not away (from a woman) altogether, so as to leave her (as it were) hanging (in the air). If ye come to a friendly understanding, and practise self-restraint, Allah is Oft-forgiving, Most Merciful.
Mohammad Habib Shakir
(4:129) 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.
(4:129) And you will never be able to do justice between (your) wives, (Literally: women) even if you are (so) eager; yet do not incline away completely (Literally: incline away all inclining) (from one), so that you leave her (behind) as if she were suspended. And in case you (do) righteousness and are pious (to Allah), then surely Allah has been Ever-Forgiving, Ever-Merciful.
(4:129) You will never be able to deal between your wives with absolute equality (in respect of love and emotional attachment), however much you may desire to do so. But do not turn away altogether (from any one of them), so as to leave her in a dangling state (uncertain if she has or does not have a husband). If you act righteously (between them) and act in piety (fearful of doing any deliberate wrong to any of them), then surely God is All-Forgiving, All-Compassionate.
Amatul Rahman Omar
(4:129) It is not within your power (as far as natural feelings of love and devotion are concerned,) to maintain perfect balance between wives (and to treat them with equal justice) even though you be ever so eager
(4:129) And you will never be able that you be just/equitable between the women, and (even) if you held onto stingily and desired strongly (were very careful), so do not bend/sway all the bend/inclination, so you leave her as/like the suspended neither properly married nor divorced and free to remarry (abused, abandoned and neglected), and if you reconciliate, and you fear and obey (God), so then God was/is a forgiving, merciful.
(4:129) Howsoever you may try you will never be able to treat your wives equally. But do not incline (to one) exclusively and leave (the other) suspended (as it were). Yet if you do the right thing and are just, God is verily forgiving and kind.
A. J. Arberry
(4:129) You will not be able to be equitable between your wives, be you ever so eager; yet do not be altogether partial so that you leave her as it were suspended. If you set things right, and are godfearing, God is All-forgiving, All-compassionate.
Abdul Majid Daryabadi
(4:129) And ye are not able to deal evenly between the wives, even though ye long to do so, but incline not an extreme inclining so that ye may leave her as one ahanging. And if ye effect a reconciliation and fear Allah, then Allah is ever Forgiving, Merciful.
Maulana Mohammad Ali
(4:129) And if a woman fears ill-usage from her husband or desertion no blame is on them if they effect a reconciliation between them. And reconciliation is better. And avarice is met with in (men’s) minds. And if you do good (to others) and keep your duty, surely Allah is ever aware of what you do.
(4:129) You will never be able to maintain justice among your wives and love them all equally, no matter how hard you try. Do not give total preference to one of them, leaving the other as if in suspense. If you do bring about reconciliation and maintain piety, God is All-forgiving and All-merciful.
Hamid Abdul Aziz
(4:129) To Allah belongs all that is in the heavens and that is in the earth! We have charged those who have been given the Book before you, and you too, that you fear (respect and do your duty to) Allah. But if you disbelieve, verily, to Allah belongs all that is in the heavens and that is in the earth, and Allah is Absolute (free of all wants) and Worthy of all Praise!
(4:129) And you will never be able to deal equally between women however much you may desire – therefore do not be totally inclined towards one leaving the other in uncertainty
(4:129) You will not be able to treat women with equal fairness, no matter how much you desire it. But do not be so biased as to leave another suspended. If you make amends, and act righteouslyGod is Forgiving and Merciful.
Ahmed Raza Khan
(4:129) And you will never be able to deal equally between women however much you may desire therefore do not be totally inclined towards one leaving the other in uncertainty; and if you do good and practice piety, then (know that) Allah is Oft Forgiving, Most Merciful.
(4:129) You will never be able to treat your wives with equal fairness, however much you may desire to do so, but do not ignore one wife altogether, leaving her suspended [between marriage and divorce]. And if you make amends and act righteously, surely God is most forgiving and merciful.
(4:129) You will never be able to do perfect justice between wives even if it is your ardent desire, so do not incline too much to one of them so as to leave the other hanging. And if you do justice, and do all that is right and have Taqwa, then Allah is Ever Oft-Forgiving, Most Merciful.
Ali Quli Qarai
(4:129) You will not be able to be fair between wives, even if you are eager to do so. Yet do not turn away from one altogether, leaving her as if in a suspense. But if you are conciliatory and Godwary, Allah is indeed all-forgiving, all-merciful.
Hasan al-Fatih Qaribullah and Ahmad Darwish
(4:129) You will not be able to be just between your women, even though you are eager. Do not be altogether partial so that you leave her as if she were suspended. If you reform and are cautious, Allah is the Forgiver, the Merciful.
That is translated surah An Nisa ayat 129 (QS 4: 129) in arabic and english text, may be useful.