AN NISAA' — Ayat 15
وَاللاَّتِي يَأْتِينَ الْفَاحِشَةَ مِن نِّسَآئِكُمْ فَاسْتَشْهِدُواْ عَلَيْهِنَّ أَرْبَعةً مِّنكُمْ فَإِن شَهِدُواْ فَأَمْسِكُوهُنَّ فِي الْبُيُوتِ حَتَّىَ يَتَوَفَّاهُنَّ الْمَوْتُ أَوْ يَجْعَلَ اللّهُ لَهُنَّ سَبِيلاً
Those who commit unlawful sexual intercourse of your women - bring against them four [witnesses] from among you. And if they testify, confine the guilty women to houses until death takes them or Allah ordains for them [another] way.
Tafsir Ibnu Katsir
وَاللَـتِى يَأْتِينَ الْفَـحِشَةَ مِن نِّسَآئِكُمْ فَاسْتَشْهِدُواْ عَلَيْهِنَّ أَرْبَعةً مِّنْكُمْ فَإِن شَهِدُواْ فَأَمْسِكُوهُنَّ فِى الْبُيُوتِ حَتَّى يَتَوَفَّاهُنَّ الْمَوْتُ أَوْ يَجْعَلَ اللَّهُ لَهُنَّ سَبِيلاً - وَاللَّذَانَ يَأْتِيَـنِهَا مِنكُمْ فَـَاذُوهُمَا فَإِن تَابَا وَأَصْلَحَا فَأَعْرِضُواْ عَنْهُمَآ إِنَّ اللَّهَ كَانَ تَوَّاباً رَّحِيماً
15. And those of your women who commit illegal sexual intercourse, take the evidence of four witnesses from among you against them; and if they testify, confine them (i.e. women) to houses until death comes to them or Allah ordains for them some (other) way. 16. And the two persons among you who commit illegal sexual intercourse, punish them both. And if they repent and do righteous good deeds, leave them alone. Surely, Allah is Ever the One Who accepts repentance, (and He is) Most Merciful. At the begining of Islam, the ruling was that if a woman commits adultery as stipulated by sufficient proof, she was confined to her home, without leave, until she died. Allah said,