Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
ibnmajah:4088 – Ḥarmalah b. Yaḥyá al-Miṣrī And ʾIbrāhīm b. Saʿīd al-Jawharī > Abū Ṣāliḥ ʿAbd al-Ghaffār b. Dāwud al-Ḥarrānī > Ibn Lahīʿah > Abū Zurʿah ʿAmr b. Jābir al-Ḥaḍramī > ʿAbdullāh b. al-Ḥārith b. Jazʾ al-Zubaydī

"People will come from the east, paving the way for Mahdi," meaning, for his rule.  

ابن ماجة:٤٠٨٨ – حَدَّثَنَا حَرْمَلَةُ بْنُ يَحْيَى الْمِصْرِيُّ وَإِبْرَاهِيمُ بْنُ سَعِيدٍ الْجَوْهَرِيُّ قَالاَ حَدَّثَنَا أَبُو صَالِحٍ عَبْدُ الْغَفَّارِ بْنُ دَاوُدَ الْحَرَّانِيُّ حَدَّثَنَا ابْنُ لَهِيعَةَ عَنْ أَبِي زُرْعَةَ عَمْرِو بْنِ جَابِرٍ الْحَضْرَمِيِّ عَنْ عَبْدِ اللَّهِ بْنِ الْحَارِثِ بْنِ جَزْءٍ الزُّبَيْدِيِّ قَالَ

قَالَ رَسُولُ اللَّهِ ﷺ يَخْرُجُ نَاسٌ مِنَ الْمَشْرِقِ فَيُوَطِّئُونَ لِلْمَهْدِيِّ يَعْنِي سُلْطَانَهُ  

See similar narrations below:

Collected by Suyūṭī
suyuti:27853a –
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السيوطي:٢٧٨٥٣a –

"يَخْرُجُ نَاسٌ مِنْ الْمَشْرِقِ فَيُوَطَئونَ لِلْمَهْدِىِّ سُلْطَانَهُ".  

[هـ] ابن ماجة [طب] الطبرانى في الكبير عن عبد اللَّه بن الحارث بن جزء