Narrated Al-Bara bin Azib:
The Prophet (ﷺ) appointed `Abdullah bin Jubair as the commander of the infantry during the battle of Uhud. They returned defeated, and that is what is meant by:-- "And the Apostle was calling them back in the rear. None remained with the Prophet (ﷺ) then, but twelve men."
USC-MSA web (English) reference: Vol. 6, Book 60, Hadith 84
Arabic reference: Book 65, Hadith 4561