It Is Recommended To Have Two Mu'adhdhin In A Single Masjid
وَحَدَّثَنَا ابْنُ نُمَيْرٍ، حَدَّثَنَا أَبِي، حَدَّثَنَا عُبَيْدُ اللَّهِ، حَدَّثَنَا الْقَاسِمُ، عَنْ عَائِشَةَ، مِثْلَهُ .
This hadith has been narrated on the authority of 'A'isha by another chain of transmitters.