Sayyiduna Sa'd (may Allah be pleased with him) narrates: I heard the Messenger of Allah (peace and blessings be upon him) say to Sayyiduna Ali (may Allah be pleased with him): "You are to me what Harun (peace be upon him) was to Musa (peace be upon him), except that there is no prophet with me." Sa'id bin al-Musayyib (may Allah have mercy on him) said: I wanted to hear this directly from Sayyiduna Sa'd (may Allah be pleased with him), so I met him and mentioned to him what Amir (may Allah have mercy on him) had told me, and he said: "Yes, I heard it." I asked: "Did you hear it yourself?" He put his two fingers into his ears and said: "Yes, otherwise may these two become deaf."
Hadith Referenceمسند أبي يعلى الموصلي / مسند سعد بن أبي وقاص / 739
Hadith Takhrij«قال سعيد بن محمد السناري: صحيح: قد مضى الكلام عليه [برقم 1065]، وأشرنا هناك إلى أنه قد اختلف في سنده على ابن المنكدر، ف» «أخرجه مسند أحمد برقم: 26921، وأخرجه إتحاف الخيرة المهرة بزوائد المسانيد العشرة برقم: 6631، مسند ابویعلیٰ ترقیم الاثری: 734»