كتاب الصلاة
2  
The Book of Prayer
Bulugh al-Maram 198
He also reported from Abu Hurairah (RA):
The Prophet (ﷺ) said: "No one should announce Adhan except the one who has performed the ablution". [Reported by at-Tirmidhi who graded it Da'if (weak)].

So the narration is weak whether Marfu' [reaching back to the Prophet (ﷺ)] or Mawquf (saying of a Companion).

وَلَهُ : عَنْ أَبِي هُرَيْرَةَ ‏- رضى الله عنه ‏- أَنَّ اَلنَّبِيَّ ‏- صلى الله عليه وسلم ‏-قَالَ : { لَا يُؤَذِّنُ إِلَّا مُتَوَضِّئٌ } وَضَعَّفَهُ أَيْضًا 1‏ .‏

فَالْحَدِيثُ ضَعِيفٌ مَرْفُوعًا وَمَوْقُوفًا .‏
Reference : Bulugh al-Maram 198
In-book reference : Book 2, Hadith 198
English translation : Book 2, Hadith 198
Hadith Text
Reference