Narrated Fatimah daughter of AbuHubaysh:

Urwah ibn az-Zubayr said that Fatimah daughter of AbuHubaysh narrated to him that she asked the Messenger of Allah (ﷺ) and complained to him about the flowing of (her) blood. The Messenger of Allah (ﷺ) said to her: That is only (due to) a vein: look, when your menstruation comes, do not pray; and when your menstruation ends, wash yourself and then offer prayer during the period from one menstruation to another.

حَدَّثَنَا عِيسَى بْنُ حَمَّادٍ، أَخْبَرَنَا اللَّيْثُ، عَنْ يَزِيدَ بْنِ أَبِي حَبِيبٍ، عَنْ بُكَيْرِ بْنِ عَبْدِ اللَّهِ، عَنِ الْمُنْذِرِ بْنِ الْمُغِيرَةِ، عَنْ عُرْوَةَ بْنِ الزُّبَيْرِ، أَنَّ فَاطِمَةَ بِنْتَ أَبِي حُبَيْشٍ، حَدَّثَتْهُ أَنَّهَا، سَأَلَتْ رَسُولَ اللَّهِ صلى الله عليه وسلم فَشَكَتْ إِلَيْهِ الدَّمَ فَقَالَ لَهَا رَسُولُ اللَّهِ صلى الله عليه وسلم ‏

‏ إِنَّمَا ذَلِكَ عِرْقٌ فَانْظُرِي إِذَا أَتَى قُرْؤُكِ فَلاَ تُصَلِّي فَإِذَا مَرَّ قُرْؤُكِ فَتَطَهَّرِي ثُمَّ صَلِّي مَا بَيْنَ الْقُرْءِ إِلَى الْقُرْءِ ‏

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