Master Fethullah Gulen is talking about Hazrat Mahdi (pbuh)

FETHULLAH GULEN:  The hadiths about the Hazrat Mahdi (pbuh) that are likely to happen are of mutawatir (successive) nature. These are related by almost more than twenty Companions. So much so that even the subject matters related with the religious judgments are not related successively by this many companions. In his book in which he collected the mutawatir (successive) hadiths, in which he deliberated on the mutawatir hadiths Kettani had stated that these were related by more than twenty Companions and that these were mutawatir in nature. What's more, when we leaf through the books I have mentioned; Al-Mustadrak of Hakim, As-Sunan al-Kubra of Al-Bayhaqi, together with Mohammed (pbuh), together with the Mahdi, we come face to face to the individual who will come in the End Times.