عَنْ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا قَالَتْ: أَتَتْ فَاطِمَةُ بِنْتُ أَبِي حُبَيْشٍ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ فَقَالَتْ: إِنِّي أُسْتَحَاضُ، فَقَالَ: ((دَعِي الصَّلَاةَ أَيَّامَ حَيْضِكِ ثُمَّ اغْتَسِلِي وَتَوَضَّئِي عِنْدَ كُلِّ صَلَاةٍ وَإِنْ قَطَرَ الدَّمُ عَلَى الْحَصِيرِ))
It is narrated from Sayyida Aisha (RA) that Sayyida Fatima bint Abu Hubaysh (RA) came to the Holy Prophet (peace and blessings be upon him) and said: I am afflicted with the blood of Istihada (non-menstrual bleeding). The Prophet (peace and blessings be upon him) said: Leave the prayer during your menstrual days, then perform ghusl (ritual bath) and, after making wudu (ablution) for every prayer, perform the prayer, even if the blood continues to drip onto the mat.