Sahih al-Bukhari 4896
Sahih al-Bukhari · Book 65: Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh)) · "[And (remember) when 'Isā (Jesus a.s.), son of Mary said: "O Children of Israel! I am the Messenger of Allāh unto you, confirming the Torah (which came) before me, and giving glad tidings of a Messenger to come] after me, whose name shall be Ahmad." (61:6)
Narrated Jubair bin Mut`im:
حَدَّثَنَا أَبُو الْيَمَانِ ، أَخْبَرَنَا شُعَيْبٌ ، عَنِ الزُّهْرِيِّ ، أَخْبَرَنِي مُحَمَّدُ بْنُ جُبَيْرِ بْنِ مُطْعِمٍ ، عَنْ أَبِيهِ ـ رضى الله عنه ـ قَالَ سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ " إِنَّ لِي أَسْمَاءً، أَنَا مُحَمَّدٌ، وَأَنَا أَحْمَدُ، وَأَنَا الْمَاحِي الَّذِي يَمْحُو اللَّهُ بِيَ الْكُفْرَ، وَأَنَا الْحَاشِرُ الَّذِي يُحْشَرُ النَّاسُ عَلَى قَدَمِي، وَأَنَا الْعَاقِبُ " .
I heard Allah's Messenger (ﷺ) saying, 'I have several names: I am Muhammad and I am Ahmad, and I am Al- Mahi with whom Allah obliterates Kufr (disbelief), and I am Al-Hashir (gatherer) at whose feet (i.e. behind whom) the people will be gathered (on the Day of Resurrection), and I am Al-Aqib (i.e. who succeeds the other prophets in bringing about good).