Kitab al-Fitan · Nu'aym ibn Hammad

The one who takes it will regret not having increased, and the one who leaves will regret not having taken it. Indeed, what they acquired from it will be a help to them in the years of hardship and the years of the Dajjal.

If a man from the Quraysh goes to Constantinople, then he has attended to its command, and the commander of the army who conquers Constantinople is neither a thief, nor an adulterer, nor an oppressor, and the epics are at the hands of a man from the family of Heraclius.

The great epic, the destruction of Constantinople, and the emergence of the Dajjal, in seven months, or as long as Allah wills