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

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 Allāh 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 [i.e., mahr] 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 affliction [i.e., sin], but to be patient is better for you. And Allāh is Forgiving and Merciful.