Sahih al-Bukhari 6846
Sahih al-Bukhari · Book 86: Limits and Punishments set by Allah (Hudood) · Whoever saw his wife with another man and killed him
Narrated Al-Mughira:
حَدَّثَنَا مُوسَى ، حَدَّثَنَا أَبُو عَوَانَةَ ، حَدَّثَنَا عَبْدُ الْمَلِكِ ، عَنْ وَرَّادٍ ، كَاتِبِ الْمُغِيرَةِ عَنِ الْمُغِيرَةِ ، قَالَ قَالَ سَعْدُ بْنُ عُبَادَةَ لَوْ رَأَيْتُ رَجُلاً مَعَ امْرَأَتِي لَضَرَبْتُهُ بِالسَّيْفِ غَيْرَ مُصْفَحٍ. فَبَلَغَ ذَلِكَ النَّبِيَّ صلى الله عليه وسلم فَقَالَ " أَتَعْجَبُونَ مِنْ غَيْرَةِ سَعْدٍ، لأَنَا أَغْيَرُ مِنْهُ، وَاللَّهُ أَغْيَرُ مِنِّي " .
Sa`d bin Ubada said, "If I found a man with my wife, I would kill him with the sharp side of my sword." When the Prophet (ﷺ) heard that he said, "Do you wonder at Sa`d's sense of ghira (self-respect)? Verily, I have more sense of ghira than Sa`d, and Allah has more sense of ghira than I."