وَعَنْ مُعَاذِ بْنِ جَبَلٍ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ: ”الْمَلْحَمَةُ الْعُظْمَى وَفَتْحُ الْقُسْطُنْطِينِيَّةُ وَخُرُوجُ الدَّجَّالِ فِي سَبْعَةِ أَشْهُرٍ“
It is narrated from Sayyiduna Mu'adh bin Jabal (may Allah be pleased with him), the Messenger of Allah (peace and blessings be upon him) said: Great bloodshed, the conquest of Constantinople, and the appearance of the Dajjal—these three events will manifest within seven months.