Hadith 10:574
Abu Bakr narrated to us, he said: Mu'tamir ibn Sulayman narrated to us, from his father, that al-Hasan and Umar ibn Abd al-Aziz said regarding the Christian woman who embraces Islam while under her husband: They both said, "Islam has removed her from him."
حدثنا أبو بكر قال نا معتمر بن سليمان عن أبيه أن الحسن وعمر بن عبد العزيز قالا في النصرانية تسلم تحت زوجها قالا الإسلام أخرجها منه