Saeed bin Musayyib (may Allah have mercy on him) says that once a son of Sayyiduna Sa’d bin Abi Waqqas (may Allah be pleased with him) narrated to me a hadith from his father. I went to Sayyiduna Sa’d (may Allah be pleased with him) and said to him,“I have heard a hadith attributed to you, according to which the Prophet (peace and blessings be upon him) appointed Sayyiduna Ali (may Allah be pleased with him) as the caliph over Madinah in his absence?”Upon hearing this, he became angry and said,“Who narrated this hadith to you?”I did not consider it appropriate to mention his son’s name. Then Sayyiduna Sa’d (may Allah be pleased with him) said: When the Prophet (peace and blessings be upon him) appointed Sayyiduna Ali (may Allah be pleased with him) as his deputy over Madinah during the expedition of Tabuk and left him there, he (Ali) said:“O Messenger of Allah! My desire is that wherever you go, I should be with you.”The Prophet (peace and blessings be upon him) said:“Are you not pleased that your relation to me is like that of Harun (Aaron) to Musa (Moses), except that there is no prophethood after me?”