Umar was the cause of the Martyrdom of Hazrat Zahra (peace be on her)
عَنْ أَبِي عَبْدِ اللَّهِ جَعْفَرِ بْنِ مُحَمَّدٍ (عَلَيْهِمَا السَّلَامُ)، قَالَ: …وَ كَانَ سَبَبُ وَفَاتِهَا أَنَّ قُنْفُذاً مَوْلَى عُمَرَ لَكَزَهَا بِنَعْلِ السَّيْفِ بِأَمْرِهِ فَأَسْقَطَتْ مُحَسِّناً وَ مَرِضَتْ مِنْ ذَلِكَ مَرَضاً شَدِيداً Imam Sadeq (peace be on him) says, “…The cause of her death was that Qunfudh (may Allah curse him), the slave of Umar, struck her…