Sayyiduna Abu Umamah (may Allah be pleased with him) said: I heard the Messenger of Allah (peace and blessings be upon him) saying in his sermon in the year of the Farewell Hajj: "O people! There is no prophet after me and no nation after you. Worship your Lord, pray your five prayers, fast your month, and obey those in authority over you; you will enter the Paradise of your Lord."
Hadith Referenceالمعجم الكبير للطبراني / باب الصاد / 7586