Mu'jam Kabir Tabarani 16772 — from Marwan bin al-Hakam, who said: I

Sa'id bin al-Musayyab (may Allah have mercy on him) narrates from Marwan bin al-Hakam, who said: I went with Sayyiduna Mu'awiyah (may Allah be pleased with him) to the Mother of the Believers, Sayyidah Aishah (may Allah be pleased with her), and she said: "O Mu'awiyah! You killed Hujr and his companions, and you did what you did. Did you not fear that I would hide a man in wait for you who would kill you in retaliation for Muhammad bin Abi Bakr?" He said: "No, for I am in a house of safety. I heard the Messenger of Allah (peace and blessings be upon him) say: 'Faith has shackled assassination; a believer does not assassinate.' O Mother of the Believers! How am I with regard to your needs, your messengers and your affairs?" She said: "You are good." He said: "Then leave me and Hujr until we meet before Allah."