(4) باب اسْتِحْبَابِ اتِّخَاذِ مُؤَذِّنَيْنِ لِلْمَسْجِدِ الْوَاحِدِ
Ibn Umar reported:
The Messenger of Allah (ﷺ) had two Mu'adhdhins, Bilal and 'Abdullah b. Umm Maktum, who (latter) was blind. (RU)
Reference (RU): Sahih Muslim 380 a (RU)
In-book reference (RU): Book 4, Hadith 7 (RU)
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 741 (RU)