Sahih Muslim , Book 9, Hadith 3569 (USC-MSA) ⓘ
Abu Huraira (Allah be pleased with him) reported that Sa'd b. 'Ubada al-Ansari said: Messenger of Allah, tell me if a man finds his wife with another person, should he kill him? Allah's Messenger said: No. Sa'd said: Why not? I swear by Him Who has honored you with the Truth. There upon Allah's Messenger said: Listen to what your chief says.
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا عَبْدُ الْعَزِيزِ، - يَعْنِي الدَّرَاوَرْدِيَّ - عَنْ سُهَيْلٍ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ سَعْدَ بْنَ عُبَادَةَ الأَنْصَارِيَّ، قَالَ يَا رَسُولَ اللَّهِ أَرَأَيْتَ الرَّجُلَ يَجِدُ مَعَ امْرَأَتِهِ رَجُلاً أَيَقْتُلُهُ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لاَ " . قَالَ سَعْدٌ بَلَى وَالَّذِي أَكْرَمَكَ بِالْحَقِّ . فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " اسْمَعُوا إِلَى مَا يَقُولُ سَيِّدُكُمْ ".
also referenced under: Book 19, Hadith 19 (In-Book) & Hadith 1498 (Reference)