I heard Abbas saying to Zubayr, "Right here is where the Prophet ﷺ commanded you to plant the banner."
سمعت العباس يقول للزبير: هاهنا أمرك النبي ﷺ أن تركز الراية.
Bukhari related it in the Book of Jihad and Expeditions (2976), from Muhammad bin Ala, who said, Abu Usama narrated to us, from Hisham bin Urwa, from his father, from Nafi bin Jubayr, and he narrated it. It is part of a lengthy hadith concerning the Battle of the Conquest.