One must remember that Imam mehdi is neither mentioned in Quran nor sahih hadith........................
I was wondering the same
these are few sahih ahadiths if need more tell me i will post more.
The following are the collection of Sahih (authentic) Hadith regarding Mahdi.
Hadhrat Abdullah bin Mas'ood(RA) reports from the Prophet(SAW), who said:
The world will not come to pass until a man from among my family, whose name will be my name, rules over the Arabs.
(Tirmidhi Sahih, Vol. 9, P. 74; Abu Dawud, Sahih, Vol. 5, P. 207;
also narrated by Ali b. Abi Talib, Abu Sa'id, Umm Salma, Abu Hurayra)
The Prophet(SAW) said:
Allah will bring out from concealment al-Mahdi from my family and just before the day of Judgment; even if only one day were to remain in the life of the world, and he will spread on this earth justice and equity and will eradicate tyranny and oppression.
(Musnad Ahmad Ibn Hanbal, Vol. 1, P. 99)
Hadhrat Ali(RA) narrates that Rasulullah(SAW) said:
Even if only a day remains for Qiyamah to come, yet Allah will surely send a man from my family who will fill this world with such justice and fairness, just as it initially was filled with oppression.
(Abu Dawood)
i am not saying that t.t.p is force of imam mehdi. they are US funded terrorists.