Language:
كتاب المغازى
64  
Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)
(29)
Chapter: The Ghazwa of Al-Khandaq or Al-Ahzab Battle
(29)
باب غَزْوَةُ الْخَنْدَقِ وَهْىَ الأَحْزَابُ
Sahih al-Bukhari 4113

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?" AzZubair 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. disciplespecial helper); my disciple is Az-Zubair.

حَدَّثَنَا مُحَمَّدُ بْنُ كَثِيرٍ، أَخْبَرَنَا سُفْيَانُ، عَنِ ابْنِ الْمُنْكَدِرِ، قَالَ سَمِعْتُ جَابِرًا، يَقُولُ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم يَوْمَ الأَحْزَابِ ‏"‏ مَنْ يَأْتِينَا بِخَبَرِ الْقَوْمِ ‏"‏‏.‏ فَقَالَ الزُّبَيْرُ أَنَا‏.‏ ثُمَّ قَالَ ‏"‏ مَنْ يَأْتِينَا بِخَبَرِ الْقَوْمِ ‏"‏‏.‏ فَقَالَ الزُّبَيْرُ أَنَا‏.‏ ثُمَّ قَالَ ‏"‏ مَنْ يَأْتِينَا بِخَبَرِ الْقَوْمِ ‏"‏‏.‏ فَقَالَ الزُّبَيْرُ أَنَا‏.‏ ثُمَّ قَالَ ‏"‏ إِنَّ لِكُلِّ نَبِيٍّ حَوَارِيًّا، وَإِنَّ حَوَارِيَّ الزُّبَيْرُ ‏"‏‏.‏
Reference : Sahih al-Bukhari 4113
In-book reference : Book 64, Hadith 157
USC-MSA web (English) reference : Vol. 5, Book 59, Hadith 439
  (deprecated numbering scheme)