Sariyyah of Hazrat Hamzah (radhiyallahu ‘anhu)
The first sariyyah (small contingent) which Rasulullah (sallallahu ‘alaihi wasallam) dispatched in the path of Allah Ta‘ala was sent out seven months after the Hijrah, either in the month of Ramadhaan 1 AH, or either in the month of Rabee’ul-Awwal 2 AH (based on the different views of the Ulama). Rasulullah (sallallahu ‘alaihi wasallam) dispatched this sariyyah, which consisted of thirty Muhaajireen, towards Seef-ul-Bahr under the leadership of Hazrat Hamzah (radhiyallahu ‘anhu).
The purpose of sending this sariyyah was so that they pursue the trade caravan of three hundred travellers which was under the commandership of Abu Jahl. This caravan was returning to Makkah from Syria.
After the Hijrah had taken place to Madinah Munawwarah, this was the first sariyyah that was sent out by Rasulullah (sallallahu ‘alaihi wasallam) in the path of Allah Ta‘ala, and this sariyyah only consisted of Muhaajireen. None of the Ansaar Sahaabah were part of this sariyyah.
When Hazrat Hamzah (radhiyallahu ‘anhu) reached Seef-ul-Bahr, and both parties drew their battle lines to commence the battle, then Majdi bin Amr Juhani intervened between them and mediated between the two groups. As a result, Abu Jahl returned to Makkah Mukarramah with his caravan and Hazrat Hamzah (radhiyallahu ‘anhu) returned to Madinah Munawwarah.
(Extracted from Seeratul Mustafa 2/44-45)