[Machine] She delays the prayer in its appointed time for a day or two, and then she performs ablution. If she still sees bleeding during the first prayer time, she looks again. If it is light bleeding, she performs ablution and prays. If it is still heavy bleeding, she delays the Zuhr prayer and hastens the Asr prayer, and then performs them both with one ablution. When the sun sets, she looks again. If she still sees bleeding, she performs ablution and prays. If it is still heavy bleeding, she delays the Maghrib prayer and hastens the Isha prayer, and then performs them both with one ablution. When dawn breaks, she looks again. If she still sees bleeding, she performs ablution and prays. If it is still heavy bleeding, she performs complete washing and prays the Fajr prayer. She repeats this process three times every day and night.

Abu Muhammad Al-Aqra'i said: According to me, the menstrual period is considered in this case.  

«تَدَعُ الصَّلَاةَ فِي قُرُوئِهَا ذَلِكَ يَوْمًا أَوْ يَوْمَيْنِ ثُمَّ تَغْتَسِلُ فَإِذَا كَانَ عِنْدَ الْأُولَى نَظَرَتْ فَإِنْ كَانَتْ تَرِيَّةً تَوَضَّأَتْ وَصَلَّتْ وَإِنْ كَانَ دَمًا أَخَّرَتِ الظُّهْرَ وَعَجَّلَتِ الْعَصْرَ ثُمَّ صَلَّتْهُمَا بِغُسْلٍ وَاحِدٍ فَإِذَا غَابَتِ الشَّمْسُ نَظَرَتْ فَإِنْ كَانَتْ تَرِيَّةً تَوَضَّأَتْ وَصَلَّتْ وَإِنْ كَانَ دَمًا أَخَّرَتِ الْمَغْرِبَ وَعَجَّلَتِ الْعِشَاءَ ثُمَّ صَلَّتْهُمَا بِغُسْلٍ وَاحِدٍ فَإِذَا طَلَعَ الْفَجْرُ نَظَرَتْ فَإِنْ كَانَتْ تَرِيَّةً تَوَضَّأَتْ وَصَلَّتْ وَإِنْ كَانَ دَمًا اغْتَسَلَتْ وَصَلَّتِ الْغَدَاةَ فِي كُلِّ يَوْمٍ وَلَيْلَةٍ ثَلَاثَ مَرَّاتٍ» قَالَ أَبُو مُحَمَّدٍ الْأَقْرَاءُ عِنْدِي الْحَيْضُ