Musnad Abu Ya'la al-Mawsili 209:5

Dāwūd ibn ʿAmr narrated to us, Ḥassān ibn Ibrāhīm narrated to us, from Muḥammad ibn Salamah ibn Kuhayl, from his father, from al-Minhāl, from ʿĀmir ibn Saʿd, from his father, and from Umm Salamah, that the Prophet (peace be upon him) said to ʿAlī: "Are you not pleased that you should be to me in the position of Aaron to Moses, except that there is no prophet after me?"