Two men came from the east and delivered speeches, and the Prophet ﷺ said, "Some eloquent speech has the influence of magic." (e.g., some people refuse to do something and then a good eloquent speaker addresses them and then they agree to do that very thing after his speech)  

النَّبِيُّ ﷺ إِنَّ مِنَ الْبَيَانِ لَسِحْرً