Mishkat al-Masabih #607
Prayer
The Arabic includes the chain of narration (sanad) and the collector's commentary; the English translation shows the Prophet's words only.
عَنْ مُعَاوِيَةَ قَالَ: سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ: «الْمُؤَذِّنُونَ أَطْوَلُ النَّاسِ أعناقا يَوْم الْقِيَامَة» . رَوَاهُ مُسلم
Mu‘awiya said that he heard God's Messenger say, “The mu’adhdhins will have the longest necks on the day of resurrection.”
Muslim transmitted it.
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About Mishkat al-Masabih
This hadith is #607 from Mishkat al-Masabih, in the Book of Prayer.