Sahih Bukhari

Narrated Jabir:On the day of Al-Ahzab (i.e. clans), Allah's Messenger (ﷺ) said, 'Who will bring us the news of the people (i.e. the clans of Quraish infidels)?"" Az-Zubair said, ""I."" The Prophet (ﷺ) again said, ""Who will bring us the news of the people?"" Az-Zubair said, ""I."" The Prophet (ﷺ) again said, ""Who will bring us the news of the people?"" Az-Zubair said, ""I."" The Prophet (ﷺ) then said, ""Every prophet has his Hawari (i.e. disciple - special helper); my disciple is Az-Zubair.""