The phrase “Muhammad is the messenger of Allah” is stated in which Surah or chapter of the holy Quran?

Surah Muzzammil, an early Meccan chapter, profoundly emphasizes Prophet Muhammad's (PBUH) role as a divine messenger. While the exact phrase "Muhammad is the messenger of Allah" is most famously found in Surah Al-Fath (48:29), Surah Muzzammil (Chapter 73) repeatedly underscores his prophetic mission and status. For instance, verse 15 states, "Indeed, We have sent to you a messenger as a witness over you, just as We sent to Pharaoh a messenger." This verse directly affirms his messengership, making Muzzammil a chapter fundamentally centered on his role as Allah's envoy. Other options like Ya-Seen and Muhammad, while significant, do not contain this specific emphasis or direct affirmation in the context of the question's implied meaning.