"‏ سُبْحَانَ اللَّهِ إِنَّ هَذَا مِنَ الشَّيْطَانِ لِتَجْلِسْ فِي مِرْكَنٍ فَإِذَا رَأَتْ صُفْرَةً فَوْقَ الْمَاءِ فَلْتَغْتَسِلْ لِلظُّهْرِ وَالْعَصْرِ غُسْلاً وَاحِدًا وَتَغْتَسِلْ لِلْمَغْرِبِ وَالْعِشَاءِ غُسْلاً وَاحِدًا وَتَغْتَسِلْ لِلْفَجْرِ غُسْلاً وَاحِدًا وَتَتَوَضَّأْ فِيمَا بَيْنَ ذَلِكَ ‏"

I said: Messenger of Allah, Fatimah daughter of Abu Hubaish had a flow of blood for a certain period and did not pray. The Messenger of Allah (ﷺ) said: Glory be to Allah! This comes from the devil. She should sit in a tub, and when she sees yellowness of the top of the water, she would take a bath once for the Zuhr and 'Asr prayer, and take another bath for the Maghrib and 'Isha prayers, and take a bath once for the fajr prayer, and in between times she would perform ablution. Abu Dawud said: Mujahid reported on the authority of Ibn 'Abbas: When bathing became hard for her, he commanded her to combine the two prayers. Abu Dawud said: Ibrahim reported it from Ibn 'Abbas. This is also the view of Ibrahim al-Nakha'i and 'Abd Allah b. Shaddad.