Great phenomena will happen in his time. (Ibn Hajar Haythami, Al-Qawl al-Mukhtasar fi `Alamat al-Mahdi al-Muntazar, p. 27)
"… earthquakes, sorrows, and great events are near. That day, Doomsday, is closer than this hand is to your head," he [The Prophet (may God bless him and grant him peace] said. (Sunan Abu Dawud)
The signs of his emergence resemble those preparatory signs that earlier gave an indication of our Rasulullah. (Imam Rabbani, Letters of Rabbani, vol, 2, p. 258)



