question #2 Sahih al-Bukhari 2846, Book 56, Hadith 62 : How did the Prophet Muhammad (ﷺ) select individuals for specific tasks during battles?

The Prophet (ﷺ) said, “Who will bring me the information about the enemy on the day (of the battle) of
Al-Ahzab (i.e. Clans)?” Az-Zubair said, “I will.” The Prophet (ﷺ) said again, “Who will bring me the
information about the enemy?” Az-Zubair said again, “I will.” The Prophet (ﷺ) said, “Every prophet had a
disciple and my disciple is Az-Zubair. ”