Tafsir of verse 25
Al-Mukhtasar
Whoever among you cannot marry a free woman, because he does not have enough wealth, is allowed to marry a believing slave owned by someone else. Allah knows the reality of your faith and your situation, and you are equal in your faith and humanity, so do not look down on marrying them. Marry them with the permission of their owners, and give them their dowries without reducing the amount or delaying it. This is if they are chaste and do not commit sexual offences publicly and do not take lovers secretly. If you marry them and then they have illicit sexual relations, their punishment is half that of a free woman: fifty lashes, and not stoning, which is the punishment for chaste women. Marrying chaste believing slave women is a concession for those who fear falling into illicit sexual relations, and who are not able to marry free women. Patience is preferable to marrying slave women though, so that the children do not become slaves. Allah is Forgiving and Compassionate to those of His servants who repent to Him, and it is from His mercy that He allowed marriage to slaves in the case of not being able to marry free women, for those who fear falling into illicit sexual relations.
Tafsir of the whole Surah An-Nisa
Other translations of verse 25
But if any of you cannot afford to marry free believing women, you may marry believing bondwomen in your possession. Allah knows best about your faith; you are from one another. Marry them with the permission of their masters and give them their dowries in fairness – provided that they are chaste, neither given to committing fornication nor having secret paramours. If they commit adultery after marriage, they are liable to half of the punishment prescribed for free women18. This is for those of you who fear falling into sin; but if you stay patient, it is better for you. And Allah is All-Forgiving, Most Merciful.
Notes
[18] Their punishment is fifty (50) lashes; neither stoning to death nor exile.
And whoever of you have not the means wherewith to wed free, believing women, they may wed believing girls from among those (slaves) whom your right hands possess, and Allâh has full knowledge about your Faith; you are one from another. Wed them with the permission of their own folk (guardians, Auliyâ’ or masters) and give them their Mahr according to what is reasonable; they (the above said captive and slave-girls) should be chaste, not committing illegal sex, 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.7 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 Allâh is Oft-Forgiving, Most Merciful.
Notes
[7] (V.4:25) Female or male slaves (married or unmarried); if they commit illegal sexual intercourse, their punishment is fifty (50) lashes (half of that which is for free unmarried women); neither stoning to death nor exile.
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.
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.
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.
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, (5) 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.