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  

[Machine] Indeed, Sahla bint Suhail bin Amr was experiencing istihadah (prolonged non-menstrual bleeding), so she went to the Messenger of Allah ﷺ and asked him about it. He instructed her to perform ghusl (ritual bathing) after every prayer. When she found this difficult, he ordered her to combine the Dhuhr and Asr prayers with one ghusl, and the Maghrib and Isha prayers with another ghusl, and the Fajr prayer with another ghusl.  

إِنَّ سَهْلَةَ بِنْتَ سُهَيْلِ بْنِ عَمْرٍو اسْتُحِيضَتْ فَأَتَتْ رَسُولَ اللهِ ﷺ فَسَأَلَتْهُ عَنْ ذَلِكَ فَأَمَرَهَا بِالْغُسْلِ عِنْدَ كُلِّ صَلَاةٍ فَلَمَّا جَهَدَهَا ذَلِكَ أَمَرَهَا أَنْ تَجْمَعَ بَيْنَ الظُّهْرِ وَالْعَصْرِ بِغُسْلٍ وَالْمَغْرِبِ وَالْعِشَاءِ بِغُسْلٍ وَالصُّبْحَ بِغُسْلٍ  

[Machine] "It is only Fulanah. Indeed, the Messenger of Allah ﷺ ordered her to perform ablution before every prayer. When that became difficult for her, he ordered her to combine the Dhuhr and Asr prayers with one ablution, and the Maghrib and Isha prayers with one ablution, and to perform ablution for Fajr prayer." Abu Muhammad said, "People say she was Sahlah bint Suhail." Yazid ibn Harun said, "She was Suhailah bint Sahl."  

إِنَّمَا هِيَ فُلَانَةُ إِنَّ رَسُولَ اللَّهِ ﷺ كَانَ «أَمَرَهَا بِالْغُسْلِ لِكُلِّ صَلَاةٍ فَلَمَّا شَقَّ ذَلِكَ عَلَيْهَا أَمَرَهَا أَنْ تَجْمَعَ بَيْنَ الظُّهْرِ وَالْعَصْرِ بِغُسْلٍ وَاحِدٍ وَبَيْنَ الْمَغْرِبِ وَالْعِشَاءِ بِغُسْلٍ وَاحِدٍ وَتَغْتَسِلَ لِلْفَجْرِ» قَالَ أَبُو مُحَمَّدٍ النَّاسُ يَقُولُونَ سَهْلَةُ بِنْتُ سُهَيْلٍ قَالَ يَزِيدُ بْنُ هَارُونَ سُهَيْلَةُ بِنْتُ سَهْلٍ  

[Machine] "And the Messenger of Allah ﷺ commanded her to perform ablution (washing) before every prayer. When that became difficult for her, he ordered her to combine the Dhuhr (noon) and Asr (afternoon) prayers in one ablution, and the Maghrib (evening) and Isha (night) prayers in one ablution. And she would perform ablution for Fajr (dawn) prayer."  

وَأَنَّ رَسُولَ اللَّهِ ﷺ كَانَ «أَمَرَهَا بِالْغُسْلِ عِنْدَ كُلِّ صَلَاةٍ فَلَمَّا جَهَدَهَا ذَلِكَ أَمَرَ أَنْ تَجْمَعَ بَيْنَ الظُّهْرِ وَالْعَصْرِ فِي غُسْلٍ وَاحِدٍ وَالْمَغْرِبِ وَالْعِشَاءِ فِي غُسْلٍ وَاحِدٍ وَتَغْتَسِلَ لِلصُّبْحِ»