Sunan Abi Dawud — Tribute, Spoils, and Rulership (Kitab Al-Kharaj, Wal-Fai' Wal-Imarah)

The Prophet (ﷺ) appointed Ubn Umm Makthum as a governor of Medina (in his absence) twice.

Messenger of Allah (ﷺ)! I saw (in a dream) that a bucket was hung from the sky. Abu Bakr came, caught hold of both ends of its wooden handle, and drank a little of it. Next came ‘Umar who caught hold of both ends of its wooden handle and drank of it to his fill. Next came ‘Uthman who caught hold of both ends of its handle and drank of it to his fill. Next came ‘All. He caught hold of both ends of its handle, but it became upset and some (water) from it was sprinkled on him.