Question:
Could you tell me what are the conditions of the khutbayn in order for them to be valid for the jum’ah?
Answer:
The traditional conditions for the validity of the khutba in the School of Malik are the following:
1- that they be done while the Imam is standing,
2- that they be done after the sun has passed the meridian,
3- that they fulfill what the Arabs customarily consider to be a khutba like for the Imam to say:
“Fear Allah in what He has commanded and desist from what He has forbidden rebuked..”,
4- that they be delivered inside the masjid,
5- that they be delivered before the salaat is performed,
6-that at least 12 men who are sane and at the age of puberty are in attendance,
7- that the Imam delivers them audibly, and
8- that that they be delivered in Arabic.
Was Salam
Abdullah
source : http://www.lamppostproductions.com/conditions-of-jumua-khutba/