Narrated Sa’d RA:
Allah’s Apostle set out for Tabuk appointing ‘Ali as his deputy (in Medina).
‘Ali said, “Do you want to leave me with the children and women?”
The Prophet said, “Will you not be pleased that you will be to me like Aaron (Haroon) to Moses? But there will be no prophet after me.”
[Sahih al Bukhari; Book #59, Hadith #700]