Musannaf Ibn Abi Shaybah 29507 — A man killed by a group

Sa'id bin al-Musayyib said: A man was killed in the city of San'a, so Sayyiduna Umar (may Allah be pleased with him) killed seven men in return for him and said: If all the inhabitants of the city of San'a had agreed upon killing him, I would have killed them all.