The Prophet ﷺ said: "If only one day of this world remained," – in the narration of Zaʾidah he adds: "Allah will lengthen that day" and he agrees with the rest ˹of the narration˺ – "until He will raise up in it a man (the Mahdī) who is from me" or "from ˹the bloodline˺ of my family. His father's name is the same as my father." In the narration of Fiṭr he adds: "He will fill the earth with equity and justice as it has been filled with oppression and tyranny."
In the narration of Sufyān he adds: "The world will not pass away or end before the Arabs are ruled by a man of my family whose name will be the same as mine."
عَنِ النَّبِيِّ ﷺ قَالَ: «لَوْ لَمْ يَبْقَ مِنَ الدُّنْيَا إِلاَّ يَوْمٌ» قَالَ زَائِدَةُ فِي حَدِيثِهِ: «لَطَوَّلَ اللَّهُ ذَلِكَ الْيَوْمَ» ثُمَّ اتَّفَقُوا: «حَتَّى يَبْعَثَ فِيهِ رَجُلاً مِنِّي» أَوْ «مِنْ أَهْلِ بَيْتِي يُوَاطِئُ اسْمُهُ اسْمِي وَاسْمُ أَبِيهِ اسْمَ أَبِي۔» زَادَ فِي حَدِيثِ فِطْرٍ: «يَمْلأُ الأَرْضَ قِسْطًا وَعَدْلاً كَمَا مُلِئَتْ ظُلْمًا وَجَوْرًا۔»
وَقَالَ فِي حَدِيثِ سُفْيَانَ: «لاَ تَذْهَبُ أَوْ لاَ تَنْقَضِي الدُّنْيَا حَتَّى يَمْلِكَ الْعَرَبَ رَجُلٌ مِنْ أَهْلِ بَيْتِي يُوَاطِئُ اسْمُهُ اسْمِي۔»