Narrated Abdullah Ibn Abbas: A blind man had a slave-mother who used to abuse the Prophet ﷺ and disparage him. He forbade her but she did not stop. He rebuked her but she did not give up her habit. One night she began to slander the Prophet ﷺ and abuse him. So he took a dagger, placed it on her belly, pressed it, and killed her. A child who came between her legs was smeared with the blood that was there. When the morning came, the Prophet ﷺ was informed about it. He assembled the people and said: I adjure by Allah the man who has done this action and I adjure him by my right to him that he should stand up. Jumping over the necks of the people and trembling the man stood up. He sat before the Prophet ﷺ and said: Messenger of Allah! I am her master; she used to abuse you and disparage you. I forbade her, but she did not stop, and I rebuked her, but she did not abandon her habit. I have two sons like pearls from her, and she was my companion. Last night she began to abuse and disparage you. So I took a dagger, put it on her belly and pressed it till I killed her. Thereupon the Prophet ﷺ said: Oh be witness, no retaliation is payable for her blood.
Narrated Ali ibn Abu Talib: A Jewess used to abuse the Prophet ﷺ and disparage him. A man strangled her till she died. The Messenger of Allah ﷺ declared that no recompense was payable for her blood.
Hadith Referenceسنن ابي داود / كتاب الحدود / 4362
Hadith Gradingالألبانی:ضعيف الإسناد | زبیر علی زئی:ضعيف, إسناده ضعيف, مغيرة عنعن و جرير ھو ابن عبدالحميد الضبي, انوار الصحيفه، صفحه نمبر 155
Narrated Abu Bakr: Abu Barzah said: I was with Abu Bakr. He became angry at a man and uttered hot words. I said: Do you permit me, Caliph of the Messenger of Allah ﷺ, that I cut off his neck? These words of mine removed his anger; he stood and went in. He then sent for me and said: What did you say just now? I said: (I had said: ) Permit me that I cut off his neck. He said: Would you do it if I ordered you? I said: Yes. He said: No, I swear by Allah, this is not allowed for any man after Muhammad ﷺ. Abu Dawud said: This is Yazid's version. Ahmad bin Hanbal said: That is, Abu Bakr has no powers to slay a man except for three reasons which the Messenger of Allah ﷺ had mentioned: disbelief after belief, fornication after marriage, or killing a man without (murdering) any man by him. The Prophet ﷺ had powers to kill.
Hadith Referenceسنن ابي داود / كتاب الحدود / 4363
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:حسن, وللحديث شاھد عند النسائي (4076 وسنده حسن)