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|“||Make your ṣalat (prayer) long and your khutba (sermon) short.||”|
The k̲h̲aṭīb must be in a state of ritual purity; his dress must be in accord with the prescriptions. It is commendable for the k̲h̲aṭīb to be on a pulpit or an elevated place; to salute the congregation when directing himself towards them; to sit down until the adhan is pronounced by the muʾad̲h̲d̲h̲in; and to direct himself straightway to his audience. Finally the k̲h̲aṭīb should make the Sermon short.
In medieval Islam, Sermons were generally delivered in classical Arabic. This linguistic requirement that required substantial training on the part of the khatib, and a notable degree of education on the part of listeners, especially non-Arab Muslims. This expectation contributed to the growth of a literary genre consisting of model sermons, such as those by the renowned ibn Nubata (d. 984). Later on, however, preaching in colloquial languages, while often retaining certain Arabic expressions, has become increasingly common.
One of the conditions for the validity of the Friday service is that it must be preceded by two sermons. The sermons are delivered when the number of auditors required for a valid j̲umu‘a are present.
Traditionally, as instructed in classical Islamic legal treatises, Friday congregational prayers in which Sermons were delivered were restricted to urban centers and normally to one major mosque in each city. Such a mosque is referred to as a masjid jami‘, that is, a "Friday Mosque" (or a "cathedral mosque"). These mosques were distinguished by their central location, large dimensions, monumental architecture, symbolic furnishings indicative of its exalted stature, and, the most demonstrative of all, the minbar (ritual pulpit).
In contemporary times, Friday congregational prayers with Sermons are common in mosques of all sizes and conditions, and not just restricted to a few central locations. Sermons are also dispensed through newspapers and broadcast on radio and television.
Sermons on special occasions generally contain features that are relevant to the celebrations or the natural phenomena at whose arrival they are delivered. For instance, on Eid al-Fitr, the preacher is has a duty to instruct the faithful congregation concerning the zakat, or almsgiving. On Eid al-Adha the preacher includes remarks specifying the rules for the sacrifice.
There is a slight difference in the Sermon delivered on Eid. The sermon's first part must open with nine takbīrs, the second part with seven. The Sermon may also be pronounced while sitting. Regarding the Sermons delivered during an eclipse or excessive drought, classical texts advise that such sermons must admonish the audience and ask God's forgiveness. Usually the verse 9 of Sūra LXVI is also recited and a special prayer called "Muḥammad's du'a"ʾ is said. 
One major difference between the Sermon delivered on special occasions and that delivered every Friday is that in the former the Salat precedes the Sermon, while in the latter the Salat comes after.
In the pre-modern Middle East, the mention of a ruler's name in the sermon was one of the two prerogatives of sovereignty (the other being the right to mint coins). Mentioning meant accepting the sovereignty and suzerainty of a ruler. Omitting the name of a ruler from the sermon was like publicly declaring independence. This prerogative of sovereignty was introduced by Islam, not present in the pre-Islamic era. In addition, the sermon, a major vehicle of communication, also announced the deposition of a ruler, the accession of a ruler, nomination of an heir, and the beginning and end of a war.
Abu-al-Faraj ibn Al-Jawzi writes in his Ru'ūs al-Qawārīr of a similar concept also called khutbah. Also referred to by the same name as the Sermon, this concept was different. Its primary purpose was not to admonish, instruct or reprove, but rather to exalt and praise God. It invited others to worship and celebrate God's greatness. Ibn al-Jawzi employed a variety of metaphors and alluded to nature frequently.
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "Khutba", Encyclopedia of Islam and the Muslim World
- ↑ "Khutba", Students' Britannica India, p.236
- ↑ 3.0 3.1 3.2 3.3 3.4 "Khutba", Encyclopaedia of Islam
- ↑ "Ḥamdala", Encyclopaedia of Islam
- ↑ Muslim , Ḏj̲umʿa, tr. 47, quoted in "Ḵh̲uṭba", Encyclopaedia of Islam
- ↑ Lewis p. 82-5
- ↑ Hovannisian, p. 41-3
- Gaffney, Patrick D. "Khutba." Encyclopedia of Islam and the Muslim World. Edited by Martin, Richard C. Macmillan Reference, 2004. vol. 1 p. 394. 20 April 2008
- Hoiberg, Dale; Ramchandani, Indu. Student's Britannica India. Popular Prakashan, 2000.
- Hovannisian, Richard G; Sabagh, Georges. Religion and Culture in Medieval Islam. Cambridge University Press, 2000.
- Lewis, Bernard. From Babel to Dragomans: Interpreting the Middle East. Oxford University Press, 2004.
- Wensinck, A.J. Encyclopaedia of Islam. Edited by: P. Bearman, Th. Bianquis , C.E. Bosworth , E. van Donzel and W.P. Heinrichs. Brill, 2008. Brill Online. 20 April 2008
- Khutbahbank.org.uk: An online resource of khutbahs and related articles on Islam
- FridayKhutbah.com: A collection of written, audio and video of Friday Khutbahs
- Lectures (Audio and Video) : Light Upon Light
- Lectures (Audio and Video) : Muslim Talksar:خطبة الجمعة