An-Nisa 4:25 ومن لم يستطع منكم طولا ان ينكح المحصنات المومنات فمن ما ملكت ايمانكم من فتياتكم المومنات والله اعلم بايمانكم بعضكم من بعض فانكحوهن باذن اهلهن واتوهن اجورهن بالمعروف محصنات غير مسافحات ولا متخذات اخدان فاذا احصن فان اتين بفاحشة فعليهن نصف ما على المحصنات من العذاب ذالك لمن خشي العنت منكم وان تصبروا خير لكم والله غفور رحيم ٢٥

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.