The Muslims will conquer Constantinople with Tasbih and Takbir

The Prophet said, "The Hour will not come until the furthest border of the Muslims will be in Bula." Then he said, "O 'Ali!" 'Ali said, "May my father and mother be sacrificed for you!" The Prophet said, "You will fight the Romans, and those who come after you will fight them, until the best people among the Muslims, the people of al-Hijaz, will go out to fight them, fearing nothing but Allah. They will conquer Constantinople with Tasbih and Takbir (saying "Subhan Allah" and "Allahu Akbar"), and they will obtain booty the like of which has never been seen - they will share it out by scooping it up with their sheilds. Someone will come and say, 'The Antichrist has appeared in your land', but he will be lying. Anyone who takes notice of him will regret it, and anyone who ignores him will regret it." (Ibn Majah).