An-Nisa 4:24

Walmuhsanatu mina annisa-iilla ma malakat aymanukum kitaba AllahiAAalaykum waohilla lakum ma waraa thalikuman tabtaghoo bi-amwalikum muhsineena ghayra musafiheenafama istamtaAAtum bihi minhunna faatoohunnaojoorahunna fareedatan wala junaha AAalaykumfeema taradaytum bihi min baAAdi alfareedatiinna Allaha kana AAaleeman hakeema

And [also prohibited to you are all] married women except those your right hands possess. [This is] the decree of Allāh upon you. And lawful to you are [all others] beyond these, [provided] that you seek them [in marriage] with [gifts from] your property, desiring chastity, not unlawful sexual intercourse. So for whatever you enjoy [of marriage] from them, give them their due compensation as an obligation. And there is no blame upon you for what you mutually agree to beyond the obligation. Indeed, Allāh is ever Knowing and Wise.

(Also prohibited are) the women already bound in marriage, except the bondwomen you come to own. It has been written by Allah for you. All (women), except these, have been permitted for you to seek (to marry) through your wealth, binding yourself, (in marriage) and not only for lust. So, to those of them whose company you have enjoyed, give their dues (dower) as obligated. There is no sin on you in what you mutually agree upon after the (initial) agreement. Surely, Allah is All-Knowing, All-Wise.