Musnad Ahmad 1255:19

'Ali ibn 'Asim narrated to us, Husayn ibn 'Abd al-Rahman said: 'Amir narrated to us, from Fatimah bint Qays, "That her husband divorced her three times, so she came to the Prophet, peace and blessings of Allah be upon him, complaining to him, and he did not grant her housing or maintenance." 'Umar ibn al-Khattab said: "We will not abandon the Book of Allah, the Mighty and Majestic, and the Sunnah of His Prophet, peace and blessings of Allah be upon him, for the word of a woman, for perhaps she has forgotten." He said: 'Amir said, and she narrated to me, "That the Messenger of Allah, peace and blessings of Allah be upon him, ordered her to observe her waiting period in the house of Ibn Umm Maktum."