4:24 wal muHSanaatu minan nisaai il-laa maa malakat aymaanukum* kitaabal-laahi 'Alaykum* wa uHil-la lakum maa waraa-a dhaalikum an tabtaguu bi amwaalikum muHSiniyna gayra musaafiHiyn* famastamta'Åtum bihii minhun-na fa aatuuhun-na ujuurahun-na fariyDah* wa laa junaaHa 'Alaykum fiymaa taraaDaytum bihii mim ba'Ådil fariyDah* in-nal-laaha kaana 'Aliyman Hakiymaa

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Ahmed Raza Khan: Mohammed Aqib Qadri:
And all married women are forbidden for you except the wives of disbelievers who come into your possession  as bondwomen; this is Allah's decree for you; and other than these, all women are lawful for you so that you seek them in exchange of your wealth in proper wedlock, not adultery; therefore give the women you wish to marry, their appointed bridal money; and after the appointment (of bridal money) there is no sin on you if you come to a mutual agreement; indeed Allah is All Knowing, Wise.

Yusuf Ali:
Also (prohibited are) women already married, except those whom your right hands possess: Thus hath Allah ordained (Prohibitions) against you: Except for these, all others are lawful, provided ye seek (them in marriage) with gifts from your property,- desiring chastity, not lust, seeing that ye derive benefit from them, give them their dowers (at least) as prescribed; but if, after a dower is prescribed, agree Mutually (to vary it), there is no blame on you, and Allah is All-knowing, All-wise.

Pickthal:
And all married women (are forbidden unto you) save those (captives) whom your right hands possess. It is a decree of Allah for you. Lawful unto you are all beyond those mentioned, so that ye seek them with your wealth in honest wedlock, not debauchery. And those of whom ye seek content (by marrying them), give unto them their portions as a duty. And there is no sin for you in what ye do by mutual agreement after the duty (hath been done). Lo! Allah is ever Knower, Wise.