you tell them? Safinah narrated that the Prophet (peace be upon him) said: The Caliphate of Prophecy will last thirty years; then Allah will give the rule of His Kingdom to whomever He wills." (narrated by Abu-Dawood). This was indeed the length of the Caliphate after the death of the prophet Muhammad (peace be upon him). After that, the rule of monarchies replaced the rule of the Caliphate.

Al-Israa(17):7. Then there was also the prophesy made by Muhammad a couple of years before his death that before he would die Makkah, the capital of pagan Arabia, would be captured by the Muslims. This prophesy too came true. On another occation, the prophet was sitting in a garden. Uthmaan ibn Affan walked in and the prophet asked Abu Musa Al-Ashari to give him glad tidings that he shall be of the people of Paradise and to further inform him that the people would mutiny against him. This prophecy was fulfilled many years after the death of the prophet (peace be upon him) when Uthman became the third Caliph and was murdered shortly therafter when a party of the citizens rose against him and slew him.