Sura al-Nūr 24:33

وَلْيَسْتَعْفِفِ ٱلَّذِينَ لَا يَجِدُونَ نِكَاحًا حَتَّىٰ يُغْنِيَهُمُ ٱللَّـهُ مِن فَضْلِهِۦ وَٱلَّذِينَ يَبْتَغُونَ ٱلْكِتَٰبَ مِمَّا مَلَكَتْ أَيْمَٰنُكُمْ فَكَاتِبُوهُمْ إِنْ عَلِمْتُمْ فِيهِمْ خَيْرًا وَءَاتُوهُم مِّن مَّالِ ٱللَّـهِ ٱلَّذِىٓ ءَاتَىٰكُمْ وَلَا تُكْرِهُوا۟ فَتَيَٰتِكُمْ عَلَى ٱلْبِغَآءِ إِنْ أَرَدْنَ تَحَصُّنًا لِّتَبْتَغُوا۟ عَرَضَ ٱلْحَيَوٰةِ ٱلدُّنْيَا وَمَن يُكْرِههُّنَّ فَإِنَّ ٱللَّـهَ مِنۢ بَعْدِ إِكْرَٰهِهِنَّ غَفُورٌ رَّحِيمٌ

wa-l-yastaʿfifi lladhīna lā yajidūna nikāḥan ḥattā yughniyahumu allāhu min faḍlihi wa-lladhīna yabtaghūna l-kitāba mimmā malakat aymānukum fa-kātibūhum in ʿalimtum fīhim khayran wa-ātūhum min māli allāhi alladhī ātakum wa-lā tukrihū fatayātikum ʿalā l-bighāʾi in aradna taḥaṣṣunan li-tabtaghū ʿaraḍa l-ḥayāti l-dunyā wa-man yukrihhhunna fa-inna allāha min baʿdi ikrāhihinna ghafūrun raḥīmun

Let those who find not the wherewithal for marriage keep themselves chaste, until Allah gives them means out of His grace. And if any of your slaves ask for a deed in writing (to enable them to earn their freedom for a certain sum), give them such a deed if ye know any good in them: yea, give them something yourselves out of the means which Allah has given to you. But force not your maids to prostitution when they desire chastity, in order that ye may make a gain in the goods of this life. But if anyone compels them, yet, after such compulsion, is Allah, Oft-Forgiving, Most Merciful (to them),