It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that on the day of al-Ahzab the Messenger of Allah (peace and blessings be upon him) said: "Who will bring me news of the enemy?" Al-Zubayr (may Allah be pleased with him) said: I will. He (peace and blessings be upon him) again said: "Who will bring me news of the enemy?" Al-Zubayr (may Allah be pleased with him) said: I will. He (peace and blessings be upon him) again said: "Who will bring me news of the enemy?" Al-Zubayr (may Allah be pleased with him) said: I will. The Prophet (peace and blessings be upon him) said: "Every prophet has a disciple (hawari), and my disciple is al-Zubayr."
(b) Jabir (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "Al-Zubayr is the son of my paternal aunt and my disciple from my family."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الفيء والغنيمة / 13085