Hadith 31-189

وَبِهذَا الإسناد قالَ: قالَ رَسُولَ اللَّهِ صَلَّى اللهُ عَلَيْهِ وَآلِهِ: يا عَلِيِّ لَيْسَ فِي القِيامَةِ راكِبٌ غَيْرنا وَنَحْنُ أَرْبَعَةٌ فَقامَ إِلَيْهِ رَجُلُ مِنَ الأَنْصارِ فَقالَ: فِداكَ أَبي وَاُمِّي وَمَن هُم؟ قالَ: أَنَا عَلَى دابَّةِ اللَّه: البُراقِ، وَأَخِي صالِحٌ عَلَى ناقَةِ اللَّه الَّتِي عُقِرَت وَعَمِّي حَمْزَة عَلَى ناقَتي العَضباءِ وَأَخِي عَلِيُّ عَلَى ناقَةِ مِن نُوقٍ الجَنَّة وَبِيَدِهِ لَواءُ الْحَمْد يُنادي لا إِلهَ إِلاّ اللَّه مُحَمَّدً رَسُولَ اللَّهِ. فَيَقُولُ الآدَميّونَ: ما هذا إِلاّ مَلَكٌ مُقرَّبٌ أَوْ نَبِيٌّ مُرسُلٌ أَوْ حامِلُ العَرْش فَيُجيبُهُم مَلَك مِن تَحْتِ بُطنانِ العَرْش: يا مَعاشِرَ الآدَميينَ لَيْسَ هذا مَلَك مُقَرَّب وَلا نَبِيٌّ مُرسَلٌ وَلا حامِلُ عَرشٍ، هذا الصِّدِّيقُ الأَكبَر هذا عَلِىِّ بْنِ أَبِي طالِب‏ عَلَيْهِ السَّلامُ.

According to the same documentation, God’s Prophet (S) said, “O Ali! There will be no riders but us in the Hereafter. There will be four of us.” One of the Helpers (Ansar) stood up and said, “May my father and mother be your ransom! Who are they?” The Prophet (S) replied, “I am one of them who will be riding on God’s Carriage - Al-Boraq. [58] The next one is my brother Salih (a.s.) who will be riding the she-camel of Salih [59] which was ham-strung. The third will be my uncle Hamza who will be riding the especially-marked she-camel. The fourth one will be my brother Ali (a.s.) who will be riding one of the she-camels of Paradise and carrying the Flag of Praise calling out ‘There is no god but God. Muhammad is God’s Messenger.’ The people will say, ‘This caller is none but either a nearby-stationed angel, a sent Messenger, or a carrier of the Throne.’ An angel from the Throne will respond, ‘O group of people! This caller is not a nearby-stationed angel. He is not the sent Messenger. He is not a carrier of the Throne. He is the Certifier of the Great! This is Ali ibn Abi Talib.’”