It is narrated from Sayyidah Umm Salamah (may Allah be pleased with her) that the Prophet (peace and blessings be upon him) said to Sayyiduna Ali (may Allah be pleased with him): "Are you not pleased that you should be to me as Harun was to Musa, except that there is no prophet after me?"
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 20194