[Machine] His Aunt Fatimah bint Abi Hubaysh had experienced istihaadah (irregular bleeding) and had stopped praying for some time. So she went to Umm al-Mu'mineen Aisha and mentioned this to her. The Prophet ﷺ entered and Aisha told him what Fatimah had said. The Prophet ﷺ said to tell Fatimah that she should refrain from praying for the duration of each menstrual cycle, then she should perform one complete washing (ghusl) before each prayer.
أَنَّ خَالَتَهُ فَاطِمَةَ بِنْتَ أَبِي حُبَيْشٍ اسْتُحِيضَتْ فَلَبِثَتْ زَمَانًا لَا تُصَلِّي فَأَتَتْ أُمَّ الْمُؤْمِنِينَ عَائِشَةَ فَذَكَرَتْ ذَلِكَ لَهَا فَدَخَلَ النَّبِيُّ ﷺ فَقَالَتْ يَا رَسُولَ اللهِ فَاطِمَةُ ذَكَرَتْ أَنَّهَا تُسْتَحَاضُ فَقَالَ النَّبِيُّ ﷺ قُولِي لِفَاطِمَةَ تُمْسِكُ عَنِ الصَّلَاةِ فِي كُلِّ شَهْرٍ عَدَدَ أَقْرَائِهَا قَبْلَ أَنْ يَعْرِضَ لَهَا هَذَا ثُمَّ تَغْتَسِلُ غَسْلَةً وَاحِدَةً ثُمَّ الطُّهْرُ عِنْدَ كُلِّ صَلَاةٍ