[Machine] He had a sister, and whenever he went to the Prophet ﷺ, she would incite him and insult the Prophet ﷺ. She was a polytheist, so one day he armed himself with a sword and went to her. He placed the sword on her and killed her. Then her sons came and cried out, saying, "We know who killed our mother. Will you kill our mother's killer? And these people have parents who are polytheists." When Umayr feared that they would kill him instead of her killer, he went to the Prophet ﷺ and informed him. The Prophet ﷺ asked, "Did you kill your sister?" He said, "Yes." The Prophet ﷺ asked, "Why?" He said, "Because she used to harm me for your sake." The Prophet ﷺ sent for her sons and asked them. They named someone other than her killer, so the Prophet ﷺ informed them about him and he confessed to the killing. They said, "We hear and obey."  

أَنَّهُ كَانَتْ لَهُ أُخْتٌ وَكَانَ إِذَا خَرَجَ إِلَى النَّبِيِّ ﷺ آذَتْهُ فِيهِ وشَتَمَتِ النَّبِيَّ ﷺ وَكَانَتْ مُشْرِكَةً فَاشْتَمَلَ لَهَا يَوْمًا عَلَى السَّيْفِ ثُمَّ أَتَاهَا فَوَضَعَهُ عَلَيْهَا فَقَتَلَهَا فَقَامَ بَنُوهَا فَصَاحُوا وَقَالُوا قَدْ عَلِمْنَا مَنْ قَتَلَهَا أَفَتُقْتَلُ أُمُّنَا؟ وهَؤُلَاءِ قَوْمٌ لَهُمْ آبَاءٌ وَأُمَّهَاتٌ مُشْرِكُونَ فَلَمَّا خَافَ عُمَيْرٌ أَنْ يَقْتُلُوا غَيْرَ قَاتِلِهَا ذَهَبَ إِلَى النَّبِيِّ ﷺ فَأَخْبَرَهُ فَقَالَ «أَقَتَلْتَ أُخْتَكَ؟» قَالَ نَعَمْ قَالَ «وَلِمَ؟» قَالَ إِنَّهَا كَانَتْ تُؤْذِينِي فِيكَ فَأَرْسَلَ النَّبِيُّ ﷺ إِلَى بَنِيهَا فَسَأَلَهُمْ؟ فَسَمُّوا غَيْرَ قَاتِلِهَا فَأَخْبَرَهُمُ النَّبِيُّ ﷺ بِهِ وأَهْدَرَ دَمَهَا قَالُوا سَمْعًا وَطَاعَةً