A woman had a prolonged flow of blood in the time of the Messenger of Allah ﷺ. She was commanded to advance the afternoon prayer and delay the noon prayer, and to take a bath for them only once; and to delay the sunset prayer and advance the night prayer and to take a bath only once for them; and to take a bath separately for the dawn prayer. I (Shu'bah) asked AbdurRahman: (Is it) from the Prophet ﷺ? I do not report to you anything except from the Prophet ﷺ.  

قَالَتِ اسْتُحِيضَتِ امْرَأَةٌ عَلَى عَهْدِ رَسُولِ اللَّهِ ﷺ فَأُمِرَتْ أَنْ تُعَجِّلَ الْعَصْرَ وَتُؤَخِّرَ الظُّهْرَ وَتَغْتَسِلَ لَهُمَا غُسْلاً وَأَنْ تُؤَخِّرَ الْمَغْرِبَ وَتُعَجِّلَ الْعِشَاءَ وَتَغْتَسِلَ لَهُمَا غُسْلاً وَتَغْتَسِلَ لِصَلاَةِ الصُّبْحِ غُسْلاً فَقُلْتُ لِعَبْدِ الرَّحْمَنِ أَعَنِ النَّبِيِّ ﷺ فَقَالَ لاَ أُحَدِّثُكَ عَنِ النَّبِيِّ ﷺ بِشَىْءٍ  

Sahlah daughter of Suhayl had a prolonged flow of blood. She came to the Prophet ﷺ. He commanded her to take a bath for every prayer. When it became hard for her, he commanded her to combine the noon and afternoon prayers with one bath and the sunset and night prayer with one bath, and to take a bath (separately) for the dawn prayer. Abu Dawud said: Ibn 'Uyainah reported from 'Abd al-Rahman b. al-Qasim on the authority of his father, saying: A woman had a prolonged flow of blood. She asked the Prophet ﷺ. He commanded her to the same effect.  

أَنَّ سَهْلَةَ بِنْتَ سُهَيْلٍ اسْتُحِيضَتْ فَأَتَتِ النَّبِيَّ ﷺ فَأَمَرَهَا أَنْ تَغْتَسِلَ عِنْدَ كُلِّ صَلاَةٍ فَلَمَّا جَهَدَهَا ذَلِكَ أَمَرَهَا أَنْ تَجْمَعَ بَيْنَ الظُّهْرِ وَالْعَصْرِ بِغُسْلٍ وَالْمَغْرِبِ وَالْعِشَاءِ بِغُسْلٍ وَتَغْتَسِلَ لِلصُّبْحِ  

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.  

قُلْتُ يَا رَسُولَ اللَّهِ إِنَّ فَاطِمَةَ بِنْتَ أَبِي حُبَيْشٍ اسْتُحِيضَتْ مُنْذُ كَذَا وَكَذَا فَلَمْ تُصَلِّ فَقَالَ رَسُولُ اللَّهِ ﷺ 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