Mishkat al-Masabih 27 Fitan كتاب الفتن 47

وَعَن عبد الله بن بُسر أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «بَيْنَ الْمَلْحَمَةِ وَفَتْحِ الْمَدِينَةِ سِتُّ سِنِينَ وَيَخْرُجُ الدَّجَّالُ فِي السَّابِعَةِ» . رَوَاهُ أَبُو دَاوُدَ وَقَالَ: هَذَا أصح

`Abdallah b. Busr reported God’s messenger as saying, “The time between the great war and the conquest of the city[*] will be six years, and the dajjal will come forth in the seventh.” * This could be Medina, but is more probably a reference to Constantinople. Abu Dawud transmitted it, saying this is sounder.