Sunan Abi Dawud
The Promised Deliverer (Kitab Al-Mahdi) — Hadith #4291
وَقَالَ هَارُونُ حَدَّثَنَا عَمْرُو بْنُ أَبِي قَيْسٍ عَنْ مُطَرِّفِ بْنِ طَرِيفٍ عَنْ أَبِي الْحَسَنِ عَنْ هِلاَلِ بْنِ عَمْرٍو قَالَ سَمِعْتُ عَلِيًّا - رضى الله عنه - يَقُولُ قَالَ النَّبِيُّ صلى الله عليه وسلم " يَخْرُجُ رَجُلٌ مِنْ وَرَاءِ النَّهْرِ يُقَالُ لَهُ الْحَارِثُ بْنُ حَرَّاثٍ عَلَى مُقَدِّمَتِهِ رَجُلٌ يُقَالُ لَهُ مَنْصُورٌ يُوَطِّئُ أَوْ يُمَكِّنُ لآلِ مُحَمَّدٍ كَمَا مَكَّنَتْ قُرَيْشٌ لِرَسُولِ اللَّهِ صلى الله عليه وسلم وَجَبَ عَلَى كُلِّ مُؤْمِنٍ نَصْرُهُ " . أَوْ قَالَ " إِجَابَتُهُ " .
Mu'allaq (suspended chain): the early portion of the chain is intentionally omitted in the original text.
The Prophet (ﷺ) said: A man called al-Harith ibn Harrath will come forth from Ma Wara an-Nahr. His army will be led by a man called Mansur who will establish or consolidate things for Muhammad’s family as Quraysh consolidated them for the Messenger of Allah (ﷺ). Every believer must help him, or he said: respond to his sermons.
Chain of Narration (Isnad)