The greatest sermon in the history of mankind was called al-Khutbatul Wida' (the farewell address), given by the Prophet Muhammad (S.A.W.), during his last Hajj in 10 AH. There are various types of sermons:

1. Khutbatul Jum'ah (the Friday Sermon). This is given immediately before the Jum'ah Salah (Friday Prayer).
2. Khutbatul Eid (the Eid Sermon) This is given immediately after the prayer of the two Eids.
3. Khutbatul Nikah (the marriage sermon). This is given during the marriage ceremony.