Jabir said:“The Prophet was standing and delivering a Khutbah for us on one Friday, when a caravan arrived in Al-Madinah. So the Companions of the Messenger of Allah rushed off until only twelve men remained. Among them were Abu Bakr and Umar. And This Ayah was revealed: And when they see some merchandise or some amusement, they disperse headlong to it.”

English translation · Jami' at-Tirmidhi