Our Prophet (saas) foretold that Hazrat Mahdi (as) would reside in a beautiful city with a team of 30 people protecting him

“The owner of this issue, Imam Mahdi, will go through a period of isolation. During this time of isolation when he will need protection and power, he will be accompanied by 30 people, so that no harm will come to him.” So Mahdi will have guards. A team of 30 guards. This is a miracle. Notice that it will be made up of a group of young people. “For them what a beautiful residence is Medina (the City).” There is reference to Istanbul here. How nice; it is related that it is a beautiful place. The abjad calculation is 1453. Bihar al Anwar, Volume 52, page 153, Hadith 6. It is said that the number of his guards will be 30, but in order to accentuate the beauty of the place, the city in which he lives, it is said, “What a beautiful residence is Medina.” Of course, this team is made up of males and females, for the hadith relates it so. 

http://en.a9.com.tr/watch/209708/Adnan-Oktarin-Sohbetlerinden-Secme-Bolumler/Our-Prophet-(saas)-foretold-that