Sunan Ibn Majah Book 1, Hadith 626

حَدَّثَنَا مُحَمَّدُ بْنُ يَحْيَى، حَدَّثَنَا أَبُو الْمُغِيرَةِ، حَدَّثَنَا الأَوْزَاعِيُّ، عَنِ الزُّهْرِيِّ، عَنْ عُرْوَةَ بْنِ الزُّبَيْرِ، وَعَمْرَةَ بِنْتِ عَبْدِ الرَّحْمَنِ، أَنَّ عَائِشَةَ، زَوْجَ النَّبِيِّ ـ صلى الله عليه وسلم ـ قَالَتِ اسْتُحِيضَتْ أُمُّ حَبِيبَةَ بِنْتُ جَحْشٍ وَهِيَ تَحْتَ عَبْدِ الرَّحْمَنِ بْنِ عَوْفٍ سَبْعَ سِنِينَ فَشَكَتْ ذَلِكَ لِلنَّبِيِّ ـ صلى الله عليه وسلم ـ فَقَالَ النَّبِيُّ ـ صلى الله عليه وسلم ـ ‏ "‏ إِنَّ هَذِهِ لَيْسَتْ بِالْحَيْضَةِ وَإِنَّمَا هُوَ عِرْقٌ فَإِذَا أَقْبَلَتِ الْحَيْضَةُ فَدَعِي الصَّلاَةَ وَإِذَا أَدْبَرَتْ فَاغْتَسِلِي وَصَلِّي ‏"‏ ‏.‏ قَالَتْ عَائِشَةُ فَكَانَتْ تَغْتَسِلُ لِكُلِّ صَلاَةٍ ثُمَّ تُصَلِّي وَكَانَتْ تَقْعُدُ فِي مِرْكَنٍ لأُخْتِهَا زَيْنَبَ بِنْتِ جَحْشٍ حَتَّى إِنَّ حُمْرَةَ الدَّمِ لَتَعْلُو الْمَاءَ ‏.‏

It was narrated from 'Urwah bin Zubair and 'Amrah bint 'Abdur-Rahman that :'Aishah the wife of the Prophet said: "Umm Habibah Jahsh experienced prolonged non-menstrual bleeding for seven years when she was married to 'Abdur-Rahman bin 'Awf. She complained about that to the Prophet and the Prophet said: 'That is not menstruation, rather it is a vein, so when the time of your period comes, leave the prayer, and when it is over, take a bath and perform prayer.'" 'Aishah said: "She used to bathe for every prayer and then perform the prayer. She used to sit in a washtub belonging to her sister Zainab bint Jahsh and the blood would turn the water red