Revelation 16:12 is coming.
The Temple of Solomon and the Euphrates River (HD)

http://www.youtube.com/watch?v=U9pPyK-dDYA

Euphrates Dried-Up : Preparation for 6th WRATH OF GOD (Rev.16:12-14)

http://www.youtube.com/watch?v=U9pPyK-dDYA

And this must be how it got in their prophecy of the 12th Iman.

Muhammad copied From the Bible River Euphrates drying up.

http://www.youtube.com/watch?v=xtZP7zfCjUk&feature=related

Because they believe that with the coming of the Mahdi will be with the stopping of the EUPHRATES.
Coincidence?
I think not.
Has it been drying up? Yes.
Don't believe that a Mahdi will come?
With bounty and bloodbath the Bible says it will come.

Portents of the coming of Hazrat Mahdi (a.s) Stopping of the waters of the Euphrates

http://www.youtube.com/watch?v=icXosnXcPUs

Islam's End-Time in reverse prophecies of what's to come are found in the Ancient Hebrew and Greek Scriptures too except it talks about what is really going to come first before the real Messiah Yeshua shows up with God's Real War on this Terror to come.