Assalamu`alaykum,
Bismillah.
Volume 2, Book 13, Number 748:
Narrated 'Abdullah Ibn Umar:
The Prophet used to deliver two Khutbas and sit in between them.
This is about the Friday Khutbah..
- See the Imaam, he's standing at a raised position (minbar) to deliver the khutbah. This is Sunnah of the Prophet (SAW). One of the reasons may be to help maximum people listen to the khateeb and second, the khateeb can keep an eye on the listeners.
A little more on the Khutbah Scene
here and
here.
Wassalam.