Hadith #354 (Shama'il Muhammadiyah)
Book: The Names Of Sayyidina Rasoolullah

“Allah’s Messenger said (Allah bless him and give him peace): “Verily I have several names: I am Muhammad; I am Ahmad; I am al-Mahi  means the one after whom there is no Prophet.)

Source: https://parallelquran.com/hadith/shamail-muhammadiyah-354/

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Hadith #355 (Shama'il Muhammadiyah)
Book: The Names Of Sayyidina Rasoolullah

“I encountered the Prophet (Allah bless him and give him peace) in one of the streets of Medina, and he said: “I am Muhammad; I am Ahmad; I am the Prophet of Mercy and the Prophet of Repentance; I am the Follower ; I am the Gatherer and the Prophet of the Fierce Battles.”

Source: https://parallelquran.com/hadith/shamail-muhammadiyah-355/