(4:23) Prohibited to you [for marriage] are your mothers, your daughters, your sisters, your father’s sisters, your mother’s sisters, your brother’s daughters, your sister’s daughters, your [milk] mothers who nursed you, your sisters through nursing, your wives’ mothers, and your step-daughters under your guardianship [born] of your wives unto whom you have gone in. But if you have not gone in unto them, there is no sin upon you. And [also prohibited are] the wives of your sons who are from your [own] loins, and that you take [in marriage] two sisters simultaneously, except for what has already occurred. Indeed, Allah is ever Forgiving and Merciful.
Muhammad Taqi-ud-Din al-Hilali and Muhammad Muhsin Khan,
(4:23) Forbidden to you (for marriage) are: your mothers, your daughters, your sisters, your father’s sisters, your mother’s sisters, your brother’s daughters, your sister’s daughters, your foster mother who gave you suck, your foster milk suckling sisters, your wives’ mothers, your step daughters under your guardianship, born of your wives to whom you have gone in – but there is no sin on you if you have not gone in them (to marry their daughters), – the wives of your sons who (spring) from your own loins, and two sisters in wedlock at the same time, except for what has already passed; verily, Allah is Oft-Forgiving, Most Merciful.
Mohammed Marmaduke William Pickthall
(4:23) Forbidden unto you are your mothers, and your daughters, and your sisters, and your father’s sisters, and your mother’s sisters, and your brother’s daughters and your sister’s daughters, and your foster-mothers, and your foster-sisters, and your mothers-in-law, and your step-daughters who are under your protection (born) of your women unto whom ye have gone in – but if ye have not gone in unto them, then it is no sin for you (to marry their daughters) – and the wives of your sons who (spring) from your own loins. And (it is forbidden unto you) that ye should have two sisters together, except what hath already happened (of that nature) in the past. Lo! Allah is ever Forgiving, Merciful.
Abdullah Yusuf Ali
(4:23) Prohibited to you (For marriage) are:- Your mothers, daughters, sisters; father’s sisters, Mother’s sisters; brother’s daughters, sister’s daughters; foster-mothers (Who gave you suck), foster-sisters; your wives’ mothers; your step-daughters under your guardianship, born of your wives to whom ye have gone in,- no prohibition if ye have not gone in;- (Those who have been) wives of your sons proceeding from your loins; and two sisters in wedlock at one and the same time, except for what is past; for Allah is Oft-forgiving, Most Merciful;-
Mohammad Habib Shakir
(4:23) Forbidden to you are your mothers and your daughters and your sisters and your paternal aunts and your maternal aunts and brothers’ daughters and sisters’ daughters and your mothers that have suckled you and your foster-sisters and mothers of your wives and your step-daughters who are in your guardianship, (born) of your wives to whom you have gone in, but if you have not gone in to them, there is no blame on you (in marrying them), and the wives of your sons who are of your own loins and that you should have two sisters together, except what has already passed; surely Allah is Forgiving, Merciful.
Dr. Ghali
(4:23) Prohibited to you are your mothers and your daughters, and your sisters, and your paternal aunts, and your maternal aunts, and (your) brother’s daughters, and (your) sister’s daughters, and your mothers who have given suck to you, and your suckling sisters, and your women’s mothers, and your step-daughters who are in your laps (i.e. under your guardianship) being born of your women whom you have been into-yet, in case you have not been into them, (Literally: entered with) it is no fault in you-and the lawful (spouses) of your sons who are of your loins, and that you should take to you two sisters together, except what has already gone by. Surely Allah has been Ever-Forgiving, Ever-Merciful.
Ali Unal
(4:23) Forbidden to you (O believing men) are your mothers (including stepmothers and grandmothers) and daughters (including granddaughters), your sisters (including full sisters and half-sisters), your aunts paternal and maternal, your brothers daughters, your sisters daughters, your mothers who have given suck to you, your milk-sisters (all those as closely related to you through milk as through descent ), your wives mothers, your stepdaughters who are your foster-children, born of your wives with whom you have consummated marriage; but if you have not consummated marriage with them, there will be no blame on you (should you marry their daughters) and the spouses of your sons who are of your loins, and to take two sisters together in marriage (including a niece and her aunt maternal or paternal) except what has happened (of that sort) in the past. Surely God is All-Forgiving, All-Compassionate.
Amatul Rahman Omar
(4:23) Forbidden to you (for marriage) are your mothers, your daughters, your sisters, your paternal aunts, and your maternal aunts, and the daughters of a brother, and the daughters of a sisters, and your (foster) mothers who have given suck to you, and your foster sisters, and the mothers of your wives, and your step-daughters who are being brought up under your care and have been born of your wives (by their former husbands,) unto whom you have gone in, but if you have not gone in unto them (- their mothers), then there is no blame on you (in marrying their daughters), and the wives of your sons who are from your own loins
Literal
(4:23) Your mothers, and your daughters, and your sisters, and your paternal aunts, and your maternal aunts, and the brothers` daughters (nieces), and the sisters` daughters (nieces), and your mothers who breast fed you, and your sisters from the lactation/breast feeding, and your women`s (wives`) mothers (mothers in-law), and your step- daughters who (are) in your custody from your women (wives) whom you entered with them (F), are forbidden on you, so if you were not entered with them (F), so no offense/sin on you, and (also forbidden on you are) your sons` allowed/permitted women (wives) whom (are) from your backbones/genealogical relations ,and that you combine between the two sisters, except what had preceded, that God was/is forgiving, merciful.
Ahmed Ali
(4:23) Unlawful are your mothers and daughters and your sisters to you, and the sisters of your fathers and your mothers, and the daughters of your brothers and sisters, and foster mothers, foster sisters, and the mothers of your wives, and the daughters of the wives you have slept with who are under your charge; but in case you have not slept with them there is no offence (if you marry their daughters); and the wives of your own begotten sons; and marrying two sisters is unlawful. What happened in the past (is now past): God is forgiving and kind.
A. J. Arberry
(4:23) Forbidden to you are your mothers and daughters, your sisters, your aunts paternal and maternal, your brother’s daughters, your sister’s daughters, your mothers who have given suck to you, your suckling sisters, your wives’ mothers, your stepdaughters who are in your care being born of your wives you have been in to — but if you have not yet been in to them it is no fault in you – and the spouses of your sons who are of your loins, and that you should take to you two sisters together, unless it be a thing of the past; God is All-forgiving, All-compassionate;
Abdul Majid Daryabadi
(4:23) Forbidden unto you are your mothers and your daughters and your sisters and your father’s sisters and your mother’s sisters, and your brother’s daughters and your sister’s daughters. and your foster mothers and your foster sisters, and the mothers of your wives and your step-daughters, that are your wards, born of your wives unto whom ye have gone in, but if ye have not gone in unto them, no sin shall be on you, and the wives of your sons that are from your own loins, and, also that ye should have two sisters together, except that which hath already passed; verily Allah is ever Forgiving, Merciful.
Maulana Mohammad Ali
(4:23)-
Muhammad Sarwar
(4:23) You are forbidden to marry your mothers, daughters, sisters, paternal aunts, maternal aunts, nieces, your foster-mothers, your foster-sisters, your mothers-in-law, your step-daughters whom you have brought up and with whose mothers you have had carnal relations. It would not be a sin to marry her if you did not have carnal relations with her mother. You are forbidden to marry the wives of your own sons and to marry two sisters at the same time without any adverse affect to the such relations of the past. God is All-forgiving and All-merciful.
Hamid Abdul Aziz
(4:23) But whoever of you cannot marry free women who believe, then marry from what your right hands possess, believing maids; Allah knows best about your faith. You arise one from the other, so marry them with the permission of their people, and give them their portions in kindness and equity, they being chaste and not lecherous, and not of loose conduct. But when they are married, if they commit fornication, then inflict upon them half the penalty for free women; that is for whomsoever of you fears wrong; but that you should have patience is better for you, for Allah is Forgiving and Merciful.
Faridul Haque
(4:23) Forbidden for you are your mothers, and your daughters, and your sisters, and your fathers sisters, and your mothers sisters, and your brothers daughters and your sisters daughters, and your foster-mothers (who breast-fed you), and their daughters (your foster-sisters), and your wives mothers (mothers-in-law), and your wives daughters who are under your protection – born of the women with whom you have cohabited
Talal Itani
(4:23) Forbidden for you are your mothers, your daughters, your sisters, your paternal aunts, your maternal aunts, your brother’s daughters, your sister’s daughters, your foster-mothers who nursed you, your sisters through nursing, your wives’ mothers, and your stepdaughters in your guardianshipborn of wives you have gone intobut if you have not gone into them, there is no blame on you. And the wives of your genetic sons, and marrying two sisters simultaneously. Except what is past. God is Oft-Forgiving, Most Merciful.
Ahmed Raza Khan
(4:23) Forbidden for you are your mothers, and your daughters, and your sisters, and your fathers sisters, and your mothers sisters, and your brothers daughters and your sisters daughters, and your foster-mothers (who breast-fed you), and their daughters (your foster-sisters), and your wives mothers (mothers-in-law), and your wives daughters who are under your protection born of the women with whom you have cohabited; and if you have not cohabited with them, then it is no sin for you to marry their daughters; and (forbidden are) the wives of your own sons (and foster-sons and grandsons) and the keeping of two sisters together in marriage, except what has already passed; indeed Allah is Oft Forgiving, Most Merciful.
Wahiduddin Khan
(4:23) You are forbidden to take as wives your mothers, daughters, sisters, paternal and maternal aunts, your brothers’ daughters and your sisters’ daughters, your foster mothers and foster sisters, your wives’ mothers and stepdaughters in your protection and the daughters of your wives with whom you have consummated your marriage; but if you have not consummated your marriage then you will not be blamed [if you marry their daughters.] You are also forbidden to marry the spouses of your sons or two sisters together, except what has already passed. Surely, God is ever-forgiving and merciful.
Safi-ur-Rahman al-Mubarakpuri
(4:23) Forbidden to you (for marriage) are: your mothers, your daughters, your sisters, your father’s sisters, your mother’s sisters, your brother’s daughters, your sister’s daughters, your foster mothers who suckled you, your foster milk suckling sisters, your wives’ mothers, your stepdaughters under your guardianship, born of your wives unto whom you have gone in — but there is no sin on you if you have not gone in unto them (to marry their daughters), — the wives of your sons who (spring) from your own loins, and two sisters in wedlock at the same time, except for what has already passed; verily, Allah is Oft- Forgiving, Most Merciful.
Ali Quli Qarai
(4:23) Forbidden to you are your mothers, your daughters and your sisters, your paternal aunts and your maternal aunts, your brothers daughters and your sisters daughters, your [foster-]mothers who have suckled you and your sisters through fosterage, your wives mothers, and your stepdaughters who are under your care [born] of the wives whom you have gone intobut if you have not gone into them there is no sin upon youand the wives of your sons who are from your own loins, and that you should marry two sisters at one timeexcluding what is already past; indeed Allah is all-forgiving, all-merciful
Hasan al-Fatih Qaribullah and Ahmad Darwish
(4:23) Forbidden to you are your mothers, your daughters, your sisters, your paternal aunts and maternal aunts, your brother’s daughters, your sister’s daughters, your mothers who have given suck to you, your suckling sisters, your wives mothers, and your stepdaughters who are in your care from your wives with whom you have lain, but if you have never lain with them it is no fault in you. (Also forbidden to you) are the wives of your sons who are of your loins, and to take to you two sisters together unless it is a thing of the past. Allah is the Forgiver and the Most Merciful.
That is translated surah An Nisa ayat 23 (QS 4: 23) in arabic and english text, may be useful.