Sunan Ibn Majah, Hadith 4308 ⓘ
It was narrated from Abu Sa’eed that the Messenger of Allah said: “I am the leader of the sons of Adam, and it is no boast. I will be the first one for whom the earth will be split open on the Day of Resurrection, and it is no boast. I will be the first to intercede and the first whose intercession will be accepted, and it is no boast. The banner of praise will be in my hand on the Day of Resurrection, and it is no boast.”
حَدَّثَنَا مُجَاهِدُ بْنُ مُوسَى، وَأَبُو إِسْحَاقَ الْهَرَوِيُّ إِبْرَاهِيمُ بْنُ عَبْدِ اللَّهِ بْنِ حَاتِمٍ قَالاَ حَدَّثَنَا هُشَيْمٌ، أَنْبَأَنَا عَلِيُّ بْنُ زَيْدِ بْنِ جُدْعَانَ، عَنْ أَبِي نَضْرَةَ، عَنْ أَبِي سَعِيدٍ، قَالَ قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ " أَنَا سَيِّدُ وَلَدِ آدَمَ وَلاَ فَخْرَ وَأَنَا أَوَّلُ مَنْ تَنْشَقُّ الأَرْضُ عَنْهُ يَوْمَ الْقِيَامَةِ وَلاَ فَخْرَ وَأَنَا أَوَّلُ شَافِعٍ وَأَوَّلُ مُشَفَّعٍ وَلاَ فَخْرَ وَلِوَاءُ الْحَمْدِ بِيَدِي يَوْمَ الْقِيَامَةِ وَلاَ فَخْرَ " .
also referenced under: Book 37, Hadith 4450 (In-Book) & Volume 5, Book 37, Hadith 4308 (DarusSalam)