عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ: أَنَّ عُمَرَ بْنَ الْخطاب قَتَلَ نَفَرًا خَمْسَةً أَوْ سَبْعَةً بِرَجُلٍ وَاحِدٍ قَتَلُوهُ قَتْلَ غِيلَةٍ وَقَالَ عُمَرُ: لَوْ تَمَالَأَ عَلَيْهِ أَهْلُ صَنْعَاءَ لَقَتَلْتُهُمْ جَمِيعًا. رَوَاهُ مَالِكٌ وروى البُخَارِيّ عَن ابْن عمر نَحوه

Sa'id b. al-Musayyib told that ‘Umar b. al-Khattab killed five or seven people for one man whom they had killed treacherously, ‘Umar saying. “If the people of San'a’ had conspired against him I would have killed them all.” Malik transmitted it, and Bukhari transmitted something similar on the authority of Ibn ‘Umar.