It was narrated from Hamzah bin ‘Abdullah, from his father, that Sa’d said:

When the Messenger of Allah (ﷺ) set out on the campaign to Tabook, he left ‘Ali in charge. [’Ali] said to him: Are you leaving me behind? He said: "Does it not please you to be to me as Haroon was to Moosa? Except that there is no Prophet (ﷺ) after me."