Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
nasai:4018Hilāl b. al-ʿAlāʾ > Ḥusayn > Zuhayr > Abū Isḥāq > ʿAmr b. Ghālib > ʿĀʾishah Yā ʿAmmār Amā Innak Taʿlam

"Aishah said: 'O 'Ammar! Do you not know that it is not permissible to shed the blood of a Muslim except in three cases: a life for a life, a man who commits adultery after being married.'"  

النسائي:٤٠١٨أَخْبَرَنَا هِلاَلُ بْنُ الْعَلاَءِ قَالَ حَدَّثَنَا حُسَيْنٌ قَالَ حَدَّثَنَا زُهَيْرٌ قَالَ حَدَّثَنَا أَبُو إِسْحَاقَ عَنْ عَمْرِو بْنِ غَالِبٍ قَالَ قَالَتْ

عَائِشَةُ يَا عَمَّارُ أَمَا إِنَّكَ تَعْلَمُ أَنَّهُ لاَ يَحِلُّ دَمُ امْرِئٍ إِلاَّ ثَلاَثَةٌ النَّفْسُ بِالنَّفْسِ أَوْ رَجُلٌ زَنَى بَعْدَ مَا أُحْصِنَ وَسَاقَ الْحَدِيثَ