Shia usually say: Fatima[as] is included in infallible ahle-bayt, because ALLAH thoroughly completely purified her in Quran 33:33. & ofcourse this means fatima[as] can’t menstruate [hayd] because blood is najs [impure] & therefore if some-one menstruate: this means she became najs at every time she menstruates + she can’t pray + she can’t fast etc.
Now you wonder why the other wives of imam are not included? or what is the status of other wives [whom shia love like khadija[ra], umm-salama[ra] etc.] of prophet[pbuh]? were they not infallible?
The answer is this: Shia belief that “Fatima (as) didn’t have menstruation” i.e. why she is included in purified verse 33:33 & fatima[as] is far away from these things!!
You can also hear this belief by shia members [only for urdu speakers]: click for video here & listen from 5:06 to 6:30.
Now here is a SAHIH Shia Hadith:
أَبُو عَلِيٍّ الْأَشْعَرِيُّ عَنْمُحَمَّدِ بْنِ عَبْدِ الْجَبَّارِ عَنْ عَلِيِّ بْنِ مَهْزِيَارَ قَالَ كَتَبْتُإِلَيْهِ ( عليه السلام ) امْرَأَةٌ طَهُرَتْ مِنْ حَيْضِهَا أَوْمِنْ دَمِ نِفَاسِهَا فِي أَوَّلِ يَوْمٍ مِنْ شَهْرِ رَمَضَانَ ثُمَّاسْتَحَاضَتْ فَصَلَّتْ وَصَامَتْ شَهْرَ رَمَضَانَ كُلَّهُ مِنْ غَيْرِ أَنْتَعْمَلَ مَا تَعْمَلُ الْمُسْتَحَاضَةُ مِنَ الْغُسْلِ لِكُلِّ صَلَاتَيْنِفَهَلْ يَجُوزُ صَوْمُهَا وَ صَلَاتُهَا أَمْ لَا فَكَتَبَ ( عليه السلام ) تَقْضِي صَوْمَهَا وَ لَا تَقْضِي صَلَاتَهَا إِنَّ رَسُولَ اللَّهِ (صلى الله عليه وآله ) كَانَ يَأْمُرُ فَاطِمَةَ صَلَوَاتُاللَّهِ عَلَيْهَا وَ الْمُؤْمِنَاتِ مِنْ نِسَائِهِ بِذَلِكَ ـ
Abu ‘Ali al-Asha’ari from Muhammad ibn ‘Abdul-Jabbar from ‘Ali ibn Mehzayar: I wrote to him (Imam) may peace be upon him: A woman was purified from her Haydh (bleeding in Menstruation) on the first day of the month of Ramadhan then she had Istihadah (False Menstruation) and she fasted and prayed during the entire month of Ramadhan without doing Ghusl (purifying her body) before every prayer so are her prayers and her fasting accepted? He peace be upon him wrote back: She must repeat her Siyam (Fasting) but not her Salat (prayer), the Prophet SAWS used to order Fatima peace be upon her and the believing women to do this.
source: al-Kafi 4/136 & Al-Majlisi says SAHIH in Miraat al-’Uqool 16/340.
Now what shia will say!!😉
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