Hadith 1:167
Narrated `A'ishah (RAA):
Fatima bint Abu Hubaish used to have a prolonged flow of blood (Istihadah) and so Allah’s Messenger (Peace be upon him)· told her, "If it is the blood of menstruation it will be dark (almost black) and recognizable (by women). If it is that, then leave the prayer. If it is other than that, then make ablution and pray." [Reported by Abu Da'ud and An-Nasa’i. Ibn Hibban and Al-Hakim graded it Sahih (sound).]
عَنْ عَائِشَةَ رَضِيَ اَللَّهُ عَنْهَا قَالَتْ: { إِنَّ فَاطِمَةَ بِنْتَ أَبِي حُبَيْشٍ كَانَتْ تُسْتَحَاضُ, فَقَالَ رَسُولُ اَللَّهِ - صلى الله عليه وسلم - "إِنَّ دَمَ اَلْحَيْضِ دَمٌ أَسْوَدُ يُعْرَفُ, فَإِذَا كَانَ ذَلِكَ فَأَمْسِكِي مِنَ اَلصَّلَاةِ, فَإِذَا كَانَ اَلْآخَرُ فَتَوَضَّئِي, وَصَلِّي" } رَوَاهُ أَبُو دَاوُدَ, وَالنَّسَائِيُّ, وَصَحَّحَهُ اِبْنُ حِبَّانَ, وَالْحَاكِمُ, وَاسْتَنْكَرَهُ أَبُو حَاتِم ٍ (167)
Original Reference: Bulugh al-Maram 138