(4:25) And whoever among you cannot [find] the means to marry free, believing women, then [he may marry] from those whom your right hands possess of believing slave girls. And Allah is most knowing about your faith. You [believers] are of one another. So marry them with the permission of their people and give them their due compensation according to what is acceptable. [They should be] chaste, neither [of] those who commit unlawful intercourse randomly nor those who take [secret] lovers. But once they are sheltered in marriage, if they should commit adultery, then for them is half the punishment for free [unmarried] women. This [allowance] is for him among you who fears sin, but to be patient is better for you. And Allah is Forgiving and Merciful.
Muhammad Taqi-ud-Din al-Hilali and Muhammad Muhsin Khan,
(4:25) And whoever of you have not the means wherewith to wed free, believing women, they may wed believing girls from among those (captives and slaves) whom your right hands possess, and Allah has full knowledge about your Faith, you are one from another. Wed them with the permission of their own folk (guardians, Auliya’ or masters) and give them their Mahr according to what is reasonable; they (the above said captive and slave-girls) should be chaste, not adulterous, nor taking boy-friends. And after they have been taken in wedlock, if they commit illegal sexual intercourse, their punishment is half that for free (unmarried) women. This is for him among you who is afraid of being harmed in his religion or in his body; but it is better for you that you practise self-restraint, and Allah is Oft-Forgiving, Most Merciful.
Mohammed Marmaduke William Pickthall
(4:25) And whoso is not able to afford to marry free, believing women, let them marry from the believing maids whom your right hands possess. Allah knoweth best (concerning) your faith. Ye (proceed) one from another; so wed them by permission of their folk, and give unto them their portions in kindness, they being honest, not debauched nor of loose conduct. And if when they are honourably married they commit lewdness they shall incur the half of the punishment (prescribed) for free women (in that case). This is for him among you who feareth to commit sin. But to have patience would be better for you. Allah is Forgiving, Merciful.
Abdullah Yusuf Ali
(4:25) If any of you have not the means wherewith to wed free believing women, they may wed believing girls from among those whom your right hands possess: And Allah hath full knowledge about your faith. Ye are one from another: Wed them with the leave of their owners, and give them their dowers, according to what is reasonable: They should be chaste, not lustful, nor taking paramours: when they are taken in wedlock, if they fall into shame, their punishment is half that for free women. This (permission) is for those among you who fear sin; but it is better for you that ye practise self-restraint. And Allah is Oft-forgiving, Most Merciful.
Mohammad Habib Shakir
(4:25) And whoever among you has not within his power ampleness of means to marry free believing women, then (he may marry) of those whom your right hands possess from among your believing maidens; and Allah knows best your faith: you are (sprung) the one from the other; so marry them with the permission of their masters, and give them their dowries justly, they being chaste, not fornicating, nor receiving paramours; and when they are taken in marriage, then if they are guilty of indecency, they shall suffer half the punishment which is (inflicted) upon free women. This is for him among you who fears falling into evil; and that you abstain is better for you, and Allah is Forgiving, Merciful.
Dr. Ghali
(4:25) And whoever of you is unable to (provide) ample (means) for marrying (free) believing women in wedlock, then (let him take) from the believing handmaids that your right hands possess; and Allah knows best your belief, the ones of you are as the others (Literally: Some of you are from some others, i.e; you are equal). So marry them by the permission of their families, (i.e. their folk) and bring them their rewards with beneficence, as (women) in wedlock, other than in fornication or taking mates to themselves. (So) when they are in wedlock, (then) in case they come up with an obscenity, (3) they shall have then half the torment of free women in wedlock. That is for the ones of you who are apprehensive of distress; (i.e; sin) (and) to be patient is more charitable for you; and Allah is Ever-Forgiving, Ever-Merciful.
Ali Unal
(4:25) If any of you cannot afford to marry free, believing women, (let them marry) believing maidens from among those whom your right hands possess. (Do not regard marriage to such believing maidens as a degradation. Rather, degradation is deviating into licentiousness without marrying.) God knows well all about your faith (and measures you by it); and (whether you be free or slaves) you are one from another (belonging, as believers, to the same faith and community). Marry them, then, with the leave of their guardians, and give them their bridal-due according to religiously lawful and customary good practice, they being women who give themselves in honest chastity, not in licentiousness, nor having secret love-companions. Then if they commit indecency after they have entered into wedlock, they shall be liable to half the penalty to which free (unmarried) women are liable. That (permission to marry slave-girls) is for those of you who fear to fall into sin (by remaining unmarried). But if you persevere (in self-restraint with no fear of falling into sin), that is better for you. And God is All-Forgiving, All-Compassionate.
Amatul Rahman Omar
(4:25) And those of you who have not the means (- social or financial) to marry free believing women (may marry) such of your believing bonds women as your right hands own (by being captives in war). Allâh knows very well (the state of) your faith, you are all (sprung) one from another, so marry them with the permission of their guardians and give them their dowers with equity, they being properly married, not (committing fornication), to pursue their lust nor taking secret paramours. And if after they are married they commit adultery then they incur (the punishment of fifty strips which is) half of that (punishment prescribed) for free women. This (permission to marry a bonds woman) is for him among you who fears (that otherwise he will fall into) sin. But it is better for you to exercise restraint. Allâh is, indeed, Great Protector, Ever Merciful.
Literal
(4:25) And who is not able, from you wealth/capability (means) that he marries the chaste, the believing (F) (free women), so from what your rights owned from your youths (girls) the believers (F), and God (is) more knowing with your (P) faith/belief, some of you (are) from some, so marry them (F), with their families`/relations`/(masters`) permission, and give them (F) their rewards/fees (dowries) with the kindness marrying, not fornicating/adulterating, and not taking (P/F) lovers/secret friends, so if they (F) married, so if they committed with an enormous deed/atrocious deed/adultery, so on them (F) half what (is) on the chaste/married (woman) from the torture, that (is) to who feared the exertion/corruption from you, and (to) be patient (is) better for you, and God (is) forgiving, merciful.
Ahmed Ali
(4:25) If one of you cannot afford to marry a believing gentlewoman (let him marry) a maid who is a believer. God is aware of your faith: The one of you is of the other; so marry them with the consent of their people, and give them an appropriate dowry. They are women (seeking) wedlock, and not lechery, nor secretly looking for paramours. But if they are married and guilty of adultery, inflict on them half the punishment (enjoined) for gentlewomen. This is for those who are afraid of doing wrong. In case they can wait, it is better for them. God is forgiving and kind.
A. J. Arberry
(4:25) Any one of you who has not the affluence to be able to marry believing freewomen in wedlock, let him take believing handmaids that your right hands own; God knows very well your faith; the one of you is as the other. So marry them, with their people’s leave, and give them their wages honourably as women in wedlock, not as in licence or taking lovers. But when they are in wedlock, if they commit indecency, they shall be liable to half the chastisement of freewomen. That provision is for those of you who fear fornication; yet it is better for you to be patient. God is All-forgiving, All-compassionate.
Abdul Majid Daryabadi
(4:25) And whosoever of you has not ampleness of means that he may wed free believing women, let him wed such of the believing bondswomen as the right hands of you people own. And Allah noweth well your belief, ye are one from the other. O Ye may wed them then, with the leave of their owners, and give them their dowers reputably as properly wedded women, not as fornicateresses, nor as those taking to themselves secret paramours. And when they have been wedded, if they commit an indecency, on them the punishment shall be a moiety of that for free wedded women. This is for him among you, who dreameth perdition; and that ye should abstain is better for you, and Allah is Forgiving, Merciful.
Maulana Mohammad Ali
(4:25)-
Muhammad Sarwar
(4:25) If any of you do not have the means to marry a chaste believing woman, marry your believing slave-girls. God knows best about your faith. You have the same faith. Marry them with the permission of their masters and if they are chaste and have avoided fornication and amorous activities, give them their just dowries. If after marriage they commit adultery, they should receive half of the punishment of a free woman who has committed the same crime. This is for those who fear falling into evil. It is better for you to have self-control. God is All-forgiving and All-merciful.
Hamid Abdul Aziz
(4:25) Allah wishes to turn towards you in mercy, but those who follow their own lusts (desires, prejudices, addictions, superstitions) wish that you should go far astray!
Faridul Haque
(4:25) And whoever among you does not have in marriage free, believing women due to poverty, should marry from the believing bondwomen you own
Talal Itani
(4:25) If any of you lack the means to marry free believing women, he may marry one of the believing maids under your control. God is well aware of your faith. You are from one another. Marry them with the permission of their guardians, and give them their recompense fairlyto be protectedneither committing adultery, nor taking secret lovers. When they are married, if they commit adultery, their punishment shall be half that of free women. That is for those among you who fear falling into decadence. But to practice self-restraint is better for you. God is Most Forgiving, Most Merciful.
Ahmed Raza Khan
(4:25) And whoever among you does not have in marriage free, believing women due to poverty, should marry from the believing bondwomen you own; and Allah knows well your faith; you are from one another; therefore marry them with the permission of their masters, and give them their bridal money according to custom, they becoming (faithful) wives, not committing mischief or secretly making friends; so when they are married and commit the shameful, for them is half the punishment prescribed for free women; this is for one among you who fears falling into adultery; and to practice patience is better for you; and Allah is Oft Forgiving, Most Merciful.
Wahiduddin Khan
(4:25) If any of you cannot afford to marry a free believing woman let him marry one of his believing maids whom he possesses. God best knows your faith. You are one of another. So marry them with their owner’s permission, and give them their dower according to what is fair, neither committing fornication nor taking secret paramours. And if, after they are married, they commit adultery they shall have half the punishment prescribed for a free woman. This is for those of you who fear lest he should fall into sin. But that it is better for you to practise self restraint. God is most forgiving and merciful.
Safi-ur-Rahman al-Mubarakpuri
(4:25) And whoever of you have not the means wherewith to wed free believing women, they may wed believing girls from among those whom your right hands possess, and Allah has full knowledge about your faith, you are one from another. Wed them with the permission of their own folk (guardians) and give them their due in a good manner; they should be chaste, not fornicators, nor promiscuous. And after they have been taken in wedlock, if they commit Fahishah, their punishment is half that for free (unmarried) women. This is for him among you who is afraid of being harmed in his religion or in his body; but it is better for you that you practice self-restraint, and Allah is Oft-Forgiving, Most Merciful.
Ali Quli Qarai
(4:25) As for those of you who cannot afford to marry faithful free women, then [let them marry] from what you own, from among your faithful slave-women. Your faith is best known [only] to Allah; you are all [on a] similar [footing]. So marry them with their masters permission, and give them their dowries in an honourable manner[such of them] as are chaste women, not licentious ones or those who take paramours. But should they commit an indecent act on marrying, there shall be for them [only] half the punishment for free women. This is for those of you who fear falling into fornication; but it is better that you be continent, and Allah is all-forgiving, all-merciful.
Hasan al-Fatih Qaribullah and Ahmad Darwish
(4:25) If any one of you do not have the affluence to be able marry free believing women, (let him marry) from among the believing women that your right hand owns. Allah knows best your belief, you are from each other. Marry them with the permission of their people and give them their wages (dowry) honorably being women in marriage and chaste, not taking lovers. If, after marriage they commit adultery, they shall be liable to half the punishment of a married (free) woman. That is for those of you who fear fornication, but it is better for you to be patient. Allah is the Forgiver, the Most Merciful.
That is translated surah An Nisa ayat 25 (QS 4: 25) in arabic and english text, may be useful.