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