Maymun bin Mehran says: I came to Madinah and asked about the greatest scholar of Madinah, so I was sent to Sa'id bin al-Musayyib (may Allah be pleased with him). I asked him about a woman who has been given an irrevocable divorce, and he replied: She will observe her 'iddah in her husband's house. So I said, "What about the hadith of Fatimah bint Qais?" He expressed anger and said: The incident of Fatimah has ruined people, although there was harshness in her speech, which was unpleasant for her husband's relatives, so the Messenger of Allah (peace and blessings be upon him) ordered her to observe her 'iddah in the house of Umm Maktum.
Hadith Referenceمسند الإمام الشافعي / كتاب العدد والسكنى والنفقات / 1316
Hadith Takhrijصحيح من غير هذا الطريق اخرجه ابوداؤد ،الطلاق، باب من أنكر ذلك على فاطمة بنت قيس (2296)۔