that the Prophet (ﷺ) sent him and sent Mu`adh after him (as rulers to Yemen).
Sahih al-Bukhari Book 93, Hadith 20
← Previous Hadith Qais bin Sa`d was to the Prophet (ﷺ) like a chief police officer to an Amir (chief).

Sahih al-Bukhari Book 93, Hadith 19 Next Hadith → A man embraced Islam and then reverted back to Judaism. Mu`adh bin Jabal came and saw the man with Abu Musa. Mu`adh asked, "What is wrong with this (man)?" Abu Musa replied, "He embraced Islam and then reverted back to Judaism." Mu`adh said, "I will not sit down unless you kill him (as it is) the verdict of Allah and His Apostle.

Sahih al-Bukhari Book 93, Hadith 21